S.J.Res.9 - A joint resolution designating January 15 of each year as "Martin Luther King Day".95th Congress (1977-1978)
Cosponsors: S.J.Res.9 — 95th Congress (1977-1978)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.
Sponsor: Sen. Brooke, Edward W. [R-MA] | Cosponsor statistics: 57 current - includes 0 original