The House Committee on Internal Security (HCIS) was the renamed successor to the House Un-American Activities Committee. Formed in 1969, the committee was eliminated in 1975.
The CWIS Collection includes over 100 volumes worth of hearings and reports from HCIS. Most can be found under the SuDoc Stem Y 4. In 8/15, with the rest having the stem Y 1.1/8.
Examples of noteworthy HCIS documents in the CWIS Collection include: