A few examples of such materials.... the wide ranging gray literature of the National Bureau of Standards Computer Lit. Collection (NBS collected all reports it could on computing from gov., industry, white papers, etc. for 30 years and NBS/NIST gave them to us) consists of 10,000s of reports on virtually all areas of computing from the 1950 to 1970s, every title is in the FA. Another example is the Social Issues in Computing Collection of ephemera, pamphlets, booklets, books, and manuscripts on computing and race, gender, labor, GBLTQIA... materials highly conducive to research in the social history and sociology of computing.