Open reel audiotape, audiocassettes, compact discs, production files, administrative records, banners, and other material, 1970-2011, from IMRU Radio, an LGBT radio program airing on KPFK Pacifica Radio in Los Angeles. The Gay Radio Collective first produced IMRU in 1974. The bulk of the collection is sound recordings and production files for IMRU's full episodes, feature segments, news segments, community event calendars, airchecks, promotional segments, and outtakes.