Eric Flint was the creator of the New York Times best-selling Ring of Fire series, the best-selling alternate history series of all time. Beginning with 1632, Flint—along with dozens of cowriters—chronicled what happened when the 20th-century town of Grantville, West Virginia, was transported through time and space to 17th-century Europe. In addition, Flint was the author, with New York Times best seller David Weber, of the Crown of Slaves Saga, as well as the Belisarius series with best-selling author David Drake. Flint was the editor of Jim Baen’s Universe, as well as numerous short story anthologies. Before becoming a writer, Flint worked as a trade union organizer, longshoreman, truck driver, auto worker, steel worker, oil worker, meatpacker, glassblower, and machinist. Eric Flint passed away in 2022.

Ryk E. Spoor, while earning his masters degree in Pittsburgh, became a playtesting consultant and writer for the Wizards of the Coast, the leading publisher of role-playing games and related novels. He now lives in East Greenbush, NY, working as a technical proposal writer for a high-tech R&D firm, and spending his non-writer time with his wife and sons. Spoor is the coauthor with New York Times best seller Eric Flint, of the popular Threshold series of science fiction novels. Spoor's solo novels for Baen include Paradigms Lost, Grand Central Arena, and Spheres of Influence. He is also the author of epic fantasy Phoenix Rising.