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Solander box
Solander box
from Wikipedia
A Solander box

A Solander box ("S" may also be in lowercase), or clamshell case (mainly in American English), is a book-form case used for storing manuscripts, maps, prints, documents, old and precious books, etc. It is commonly used in archives, print rooms and libraries. It is named after the Swedish botanist Daniel Solander (1733–1782),[1] who is credited with its construction while working at the British Museum, where he catalogued the natural history collection between 1763 and 1782.

The case is usually constructed of hardcover or wood, and has a hinged lid connected to its base. Both lid and bottom sections of the box have three fixed side sections or "lips"; the lid is slightly larger so that the side pieces "nest" when the case is closed. The fourth "spine" side has flexible joints where it joins the main top and bottom pieces and so goes flat onto the surface where the box is opened. The front-edge of the case often contains a clasp for closure. The exterior is covered with heavy paper, fabric, buckram or leather, and its interior may be lined with padded paper or felt, especially if made for a book. All materials should be acid-free for conservation. The depth of the box is normally about five inches, if it is not made for a specific object, and various standard sizes are made, with traditional names including "royal", "imperial", "elephant" and others. Ones for very old books will typically be custom made to an exact size. The boxes are stored flat, and are strong enough to be kept in small stacks.

A simplified and undecorated form of Solander box termed a "phase box" is used for temporary storage of books during conservation work.[2] These are constructed from plain mounting board. Although undecorated, the materials should still be of archival grade.

See also

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  • Slipcase – Five-sided box for protecting books
  • Clamshell – Type of consumer product packaging

References

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[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
A Solander box is a protective clamshell-style case that opens flat like a , designed for the long-term archival storage and transport of valuable paper-based items such as , manuscripts, maps, prints, photographs, drawings, and botanical specimens. Named after its inventor, Swedish botanist Daniel Charles Solander (1733–1782), who developed it in the while working at the and during expeditions with Captain , the box features a distinctive flat-folding spine that allows contents to be examined with minimal handling. Typically constructed with low-resin basswood sides for stability and lightness, the box is lined with acid-free materials like 100% museum board or over binder's board, and often covered in archival book cloth to prevent damage from , , , , and physical impact. It includes practical elements such as metal latches or clasps for secure closure, a holder for identification, and sometimes a dust flap for added , making it stackable and suitable for , , and gallery use. Widely recognized as a premium choice for preserving collections, Solander boxes have remained largely unchanged since their origin, with modern versions available in standard sizes from 11 x 14 inches up to 30 x 40 inches, or custom-built for larger items, and are handmade by specialized conservators to meet archival standards. Their provides partial buffering against relative fluctuations and has proven effective in real-world scenarios, such as protecting from during floods.

History

Origins and invention

Daniel Solander (1733–1782) was a Swedish botanist and naturalist born on 19 February 1733 in , northern , to a clergyman father. Trained under the renowned botanist at , Solander became one of Linnaeus's "apostles," traveling to collect plant specimens across Europe before relocating to in 1760. There, he joined the as assistant librarian in 1763, tasked with cataloging its extensive natural history collections, including the Sloane Herbarium. In 1768, Solander served as the principal naturalist and assistant to on Captain James Cook's first circumnavigation of the globe aboard HMS Endeavour, a voyage that lasted until 1771 and focused on scientific . During this expedition, Solander and Banks collected over 3,000 plant species, many previously unknown to European science, along with extensive drawings, maps, and other documentation, which required careful preservation upon return. Back in England, Solander resumed his role at the , ascending to keeper of the natural history department in 1773, where he continued classifying and organizing specimens from the voyage. During the 1770s, while working at the , Solander devised a protective storage solution known today as the Solander box, initially designed to safeguard fragile botanical drawings, pressed specimens, manuscripts, and books from physical damage, dust, and deterioration during transport and long-term storage. The first documented applications of this invention involved housing collections from Cook's Pacific voyage, such as Solander's own sheets of Pacific flora and associated maps and sketches, which he cataloged systematically using paper slips inserted into specimen folders. This clamshell-style enclosure allowed flat, book-like access while providing robust protection for oversized or delicate flat materials. Although Solander himself referred to the design simply as a protective case during his lifetime, it was posthumously named the "Solander box" in the 19th century as the innovation gained wider recognition among librarians and archivists for its utility in institutional collections.

Adoption in institutions

The adoption of Solander boxes in British institutions marked a pivotal shift in archival practices during the mid-19th century. At the British Museum, which encompassed the British Library until its separation in 1973, the storage of drawings and prints transitioned from pasting into albums to using Solander boxes, with this method becoming common practice by the mid-1840s for safeguarding prints, maps, and rare books. This change reflected growing recognition of the boxes' protective benefits against dust, light, and handling damage, establishing them as a standard in major national collections. Over the , Solander boxes evolved into a global standard for archival storage, adopted widely in European and other international institutions. For example, the stores over 80,000 works of on and photographs in these boxes, underscoring their ongoing utility in modern collections.

Design and construction

Physical structure

The Solander box features a clamshell or book-form consisting of two rigid halves connected by a hinged spine, allowing the structure to open flat like a for unobstructed access to contents. The bottom half serves as the primary tray to hold the item, while the top half acts as a lid that closes securely over it, enclosing the contents on all sides to form a protective . This configuration, often involving nested trays where three sides of the inner tray fit within the outer tray and the fourth side forms the shared , ensures stability and ease of handling without requiring full disassembly. Key components include the hinged spine (drop-back ), which provides flexibility for opening while maintaining structural integrity. Drop-front variants, where the lid pivots downward on a fore-edge for simplified item insertion and removal, are related but not the traditional form. Internal supports, such as raised ledges or recessed lips around the perimeter of the trays, secure the contents without applying pressure, preventing shifting or abrasion during storage or transport. Clasps or latches on the fore-edge reinforce closure, allowing the box to lie completely flat when open for safe transfer of delicate items between halves. Solander boxes are typically custom-sized to accommodate specific items, with common dimensions for standard prints around 12 by 16 inches in width and , and depths ranging from 2 to 6 inches to fit bound volumes or stacked mats. This scalability supports shelving alongside books in collections. Ergonomic features enhance usability, including spine labels for quick identification and optional pulls on the lid to facilitate opening without direct contact with the interior, reducing handling risks.

Materials and variations

Solander boxes originated in the with construction featuring a wooden frame, typically assembled with dovetailed joints, covered in cloth or , and lined with for basic protection of specimens. The wooden components, such as the sides and single-piece spine, provided , while the coverings ensured a book-like form suitable for shelving. During the 19th and 20th centuries, materials evolved to incorporate buckram cloth for the exterior covering, offering greater durability and resistance to wear compared to earlier leathers. Acid-free boards began to replace traditional millboard in the early 20th century, aligning with emerging conservation practices to minimize chemical degradation. Contemporary archival standards emphasize 100% cotton museum board for interiors, ensuring acid-free and lignin-free composition with a neutral pH. Lignin-free paper linings and neutral pH adhesives are standard to prevent acid migration and maintain material stability over time. Basswood remains a preferred wood for frames due to its low resin content and lightweight properties. Variations include drop-spine boxes adapted for oversized items, featuring hinged spines that allow easier access to larger contents. Nested boxes provide compartmentalized storage for multi-volume sets, maintaining the while accommodating multiple layers.

Applications

Archival and library use

Solander boxes serve as essential enclosures in archival and settings for protecting flat, unbound materials such as manuscripts, maps, photographs, and pamphlets, enabling safe long-term storage while allowing controlled access. These boxes are particularly valued for housing delicate , including 19th-century letters and unbound serials, by providing a rigid, enclosed structure that prevents physical damage and . In , they accommodate oversized or fragile items that cannot be bound or folded without risk, preserving their original form and readability for researchers. In library workflows, Solander boxes are custom-fitted to specific collections, ensuring precise dimensions for items like maps or pamphlets to avoid shifting or creasing during storage. They integrate seamlessly with standard shelving systems in stacks, where their book-like form allows efficient vertical organization alongside bound volumes, and they support cataloging by incorporating holders for quick identification and retrieval in integrated library systems. This customization facilitates of related documents, such as grouping unbound manuscripts from a single , streamlining inventory management and access requests. Similarly, the employs Solander boxes to store treated engraved music motets, enabling flat, secure housing that supports both preservation and scholarly use. These applications highlight space-saving benefits, as the boxes allow folded documents to lie flat without vertical stacking pressure, optimizing archival footprints. Handling protocols for Solander boxes emphasize minimal intervention to reduce dust exposure, with staff trained to open the clamshell lid only in controlled environments and to use clean gloves when accessing contents. The boxes' recessed lips and tight seals inherently limit airborne contaminants, but guidelines recommend storing them in non-acidic, stable microclimates with regulated humidity below 50% to prevent material degradation. Archival standards, such as those from conservation bodies, stress closing the box immediately after use and periodic inspections for seal integrity, ensuring sustained protection for enclosed items like photographs or pamphlets.

Museum and collection storage

In museums, Solander boxes serve as a primary storage solution for delicate visual artworks, including prints, drawings, watercolors, and historical , allowing safe access while minimizing handling risks. These boxes, often customized with acid-free mats and separators, house unframed items such as pastels and graphic art, organized by artist, country, or size to facilitate efficient retrieval. For instance, at The Metropolitan Museum of Art, unframed prints, drawings, and pastels are stored in Solander boxes with sectioned compartments, enabling quick access for study or display preparation. Similarly, the employs Solander boxes for housing photographic albums and related 19th-century works, adapting the design to protect against dust and light during long-term storage. Solander boxes are adapted for three-dimensional artifacts beyond flat artworks, including oversized versions for textiles and biological specimens, where internal matting or trays prevent shifting and abrasion. Flat textiles, such as fragments or embroidered panels, fit into custom-depth boxes lined with buffered paper to maintain stability, while biological specimens like pressed or mounted occupy shallow compartments to preserve structural integrity. These adaptations extend to integration within climate-controlled vaults, where boxes are shelved in high-density systems to optimize and environmental consistency in collections. In collection , Solander boxes play a crucial role in facilitating temporary removal for exhibitions and long-term loans, with their sturdy, hinged design supporting secure transport on padded carts or crates. Items are easily extracted for installation or sessions, then returned to minimize exposure, while external labels and metal nameplates enable precise tracking of contents and during loans or rotations. Software systems like further integrate box locations into databases, recording movements between storage, galleries, and external venues to ensure accountability. A notable application appears in natural history museums preserving botanical illustrations from Captain James Cook's voyages, where Solander boxes—named after the expedition's botanist —safeguard watercolors and sketches by artists like Sydney Parkinson. This use underscores the box's origins in botanical specimen storage, as developed by Solander for the British Museum's collections.

Preservation aspects

Protective features

The clamshell design of the Solander box features a hinged with a recessed and tight-fitting that minimizes exposure to light, dust, and airborne pollutants by creating a secure seal when closed. This seal effectively blocks contaminants such as insects and particulate matter, enhancing the internal for stored items. The interior lining, typically composed of acid-free, lignin-free, and buffered archival paper with a pH of at least 8.5, prevents chemical migration from the box materials to the contents, thereby reducing the risk of acid-induced degradation in sensitive documents or artifacts. Additionally, the box's ability to buffer relative humidity (RH) fluctuations—achieving internal variations of less than 5% in coated variants compared to external changes—helps mitigate moisture-related damage like mold growth or dimensional instability in paper-based materials. Physically, the rigid construction, including low-resin basswood sides, durable binder board panels, and secure metal latches, resists crushing, bending, or deformation even when stacked or subjected to moderate pressure. Internal padding, such as a 4-ply mat board tray at the base, absorbs shocks during handling or transport, providing cushioning that protects fragile contents from impact. Solander boxes made with archival-grade materials comply with standards like ISO 11799 for long-term storage repositories, which recommend controlled conditions such as 16–19°C and 30–50% RH to achieve preservation longevity of 100–200 years or more for and archival materials. This design has supported stable storage for over 250 years in institutional settings, demonstrating inherent durability under proper environmental management. Compared to open-shelf storage, Solander boxes significantly reduce degradation by limiting exposure to humidity swings, pollutants, and physical hazards; studies indicate they maintain more stable microclimates, minimizing chemical reactions, , and mechanical damage in enclosed versus exposed items. For instance, the boxes' air exchange rates and moisture absorption properties by internal help diffuse volatile organic compounds, offering superior protection against environmental stressors than unprotected shelving.

Limitations and maintenance

Wooden Solander boxes, while durable, can be heavy due to their construction from solid wood frames and boards, complicating handling and transport, particularly for larger sizes or when multiple boxes must be moved simultaneously. This weight necessitates careful manipulation protocols, often requiring two or more individuals for safe transport to avoid strain or accidental damage. In humid storage environments, Solander boxes pose a risk of mold growth on enclosed items if relative humidity exceeds 70%, as moisture can accumulate inside despite the box's protective design. Additionally, older versions using pyroxylin-impregnated fabrics for exteriors can degrade over time, releasing nitric acid through off-gassing, which may harm contained artifacts. Such outdated materials underscore the importance of selecting modern, inert alternatives to prevent chemical deterioration. Maintenance of Solander boxes involves regular inspections every for signs of pests, wear, or degradation, using visual checks and, if needed, UV light to detect early issues. should be performed gently with soft brushes to remove from exteriors and interiors, avoiding chemical cleaners that could introduce residues. Degraded linings or fabrics, particularly in older boxes, may require replacement after decades of use, guided by condition assessments to ensure ongoing archival . The high cost of custom Solander boxes, typically ranging from $100 to $500 depending on size and materials, can limit accessibility for smaller institutions or private collectors. For budget constraints, alternatives such as polyester film enclosures or polypropylene Solander-style boxes offer more economical options while providing basic protection against dust and handling damage. To mitigate these limitations, silica gel packets can be placed inside boxes to control humidity fluctuations and prevent mold, with packets monitored and regenerated as needed. Staff training on safe handling techniques, including proper lifting and environmental monitoring, is essential to minimize risks during use and storage.

References

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