Kirby was hired by Ruby-Spears in 1980 to work on Thundaar the Barbarian. He was retained for eight years by the studio to create art to illustrate Joe Ruby’s ideas. The body of work includes extensive heroes and villains, spaceships, cars, gadgets and buildings.
The archive is dominated by over-size Kirby pencils. Some of the pieces have been inked by other artists, and a portion of the collection was also colored by other artists.