H.R.12139 - A bill to provide that pay adjustments for Members of Congress take effect in the Congress next following the Congress in which they are approved.93rd Congress (1973-1974)
Cosponsors: H.R.12139 — 93rd Congress (1973-1974)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: Rep. Mallary, Richard W. [R-VT-At Large] | Cosponsor statistics: 17 current - includes 0 original