Collections : [University of Michigan Bentley Historical Library]

Republican member of the state house and the state senate; president of the University Musical Society. Legislative and campaign files, 1919-1935, detailing his election campaigns, his activities within the legislature, and his various responsibilities as a member of the Republican State Central Committee; general correspondence files, 1922-1960, largely pertaining to his work with the University Musical Society and other civic activities; topical files; family history and memoirs; diaries and appointment books; papers of wife Alva Gordon Sink; and visual materials.

Michigan Republican Party official, 1961-1969, assistant chairman of the national Republican Party, 1963-1964 and 1969-1970, candidate for, U.S. senate in 1964, and co-chair of ERAmerica, a national organization promoting the ratification of the Equal Rights Amendment. Papers consist of correspondence, reports, speeches, organizational records of ERAmerica, scrapbooks and photographs.

The Elly McMillan Peterson papers document the career of a Republican party activist and official, an advocate of the Equal Rights Amendment, and candidate for the U.S. Senate. The papers, comprised largely of correspondence, reports, and memoranda, are organized into seven series: Republican Party Activities, ERAmerican, Other Organizational Activities, Personal/Biographical, Speeches, Photographs, Scrapbooks/Clippings.