Committees may hold hearings on legislation. Witnesses appear before the committees and offer written and oral testimony on the particular subject of the hearing. Hearings are published as single items and are not compiled beyond the first paper issue. Committees may or may not publish the transcripts of hearings they hold. Hearings may or may not be numbered. Their dates, their subject, their committee, and their witnesses are the usual access points for hearings in the various indexes and online services.
Published hearings are online at https://www.govinfo.gov/app/collection/CHRG. The various web sites established by the committees may also contain the raw text of a recent hearing that has not yet been officially published. The home page for the House (http://www.house.gov (under the Legislation Tab)), and the Senate (http://www.senate.gov) (under the Legislation & Records Tab). Of all congressional publications, libraries do not necessarily collect paper copies of hearings consistently. For more information on Hearings see About Congressional Hearings via GovInfo.gov
The Congressional Information Service (CIS) Hearings Index indexes all published hearings of Congress through 1969. The CIS Annual Volumes pick up coverage from that point (see the "Congressional Information Service" Tab within this Libguide for further information.)
Access Hein Online via the Law Library's Database List (scroll down to "H" in this alpha list)