Indiana Jones Universe is a 41-book series with 41 released primary works first released in 1981 with contributions by Campbell Black, R. L. Stine, Rose Estes, James Kahn, Andy Helfer, Richard Wenk, Megan Stine, Henry William Stine, Ellen Weiss, Rob MacGregor, Suzanne Weyn, William McCay, Les Martin, Martin Caidin, Max McCoy, Ryder Windham, and James Rollins.