S.J.Res.163 - A joint resolution to authorize and request the President to issue a proclamation designating the week beginning May 9, 1976, as "National Small Business Week."94th Congress (1975-1976)
Cosponsors: S.J.Res.163 — 94th Congress (1975-1976)
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.