The Ron Dubren papers are a compilation of correspondence, game designs, notes, drawings, product descriptions, and paper prototypes created by Ron Dubren throughout his career in the toy and game industry. This collection also includes reference materials and an oral history recorded in 2008. The bulk of the materials are dated from 1980 through 2002.

The Stephen Sondheim collection of game and puzzle periodicals consists of periodicals and ephemera that belonged to Stephen Sondheim. The materials date from 1982 to 2018 and are housed in one folder.