HeinOnline has archived the CFRs from 1938 to present. See
https://home.heinonline.org/titles/C...eral-Register/
See also Richard McKinney's (Assistant Law Librarian, Federal Reserve Board)
Research Guide to the Federal Register and the Code of Federal Regulations,
https://www.llsdc.org/fr-cfr-research-guide -- "Originally published by the Law Librarians Society of Washington, D.C., Inc. as an article in the Fall, 2002 issue of
Law Library Lights, Vol. 46, No. 1, p. 10-15."