Margaret Weis joined TSR, Inc. as a game editor. This marked the beginning of her professional career in the fantasy genre.

Margaret Weis, along with Tracy Hickman and a team of other TSR creatives, began developing the Dragonlance world and storyline. This collaborative process was instrumental in shaping the unique and expansive universe that would captivate readers.

"Dragons of Autumn Twilight", the first novel in the "Chronicles" trilogy, was published. Co-authored with Tracy Hickman, this book was a massive success, launching the Dragonlance saga into the mainstream and establishing Weis and Hickman as major figures in fantasy literature.

Margaret Weis and Tracy Hickman co-authored the "Chronicles" trilogy: "Dragons of Autumn Twilight", "Dragons of Winter Night", and "Dragons of Spring Dawning". This trilogy established the core characters, storylines, and themes of the Dragonlance saga, and became a cornerstone of fantasy literature.

"Dragons of Summer Flame" was published, concluding the original series. This book was the last of the core Dragonlance novels written by Weis and Hickman together for some time.