S.2945 - An Act to amend the act of October 15, 1966 (80 Stat. 953; 20 U.S.C. 65a), relating to the National Museum of the Smithsonian Institution, so as to authorize additional appropriations to the Smithsonian Institution for carrying out the purposes of said Act.94th Congress (1975-1976)
Cosponsors: S.2945 — 94th Congress (1975-1976)All Information (Except Text)
Congress.gov databases include cosponsorship dates (including identification of "original" cosponsors) since 1981 (97th Congress). Prior to 1981, you may be able to find some information online, but often the information is available only in print form.