Lawyer, businessman and U.S. secretary of the treasury. Correspondence, family papers, subject files, business, legal, and financial papers, speeches and writings, and miscellaneous material relating primarily to MacVeagh's service in the cabinet of William H. Taft and to the MacVeagh (McVey) and Eames families, Chicago social and civic affairs, the Franklin MacVeagh & Company wholesale grocery business, and other personal and business matters.

Correspondence, financial papers, notes, reports, charts, lists and rosters, printed material, photographs, and other papers relating mainly to the presidential campaigns of William H. Taft and Charles Evans Hughes and the congressional campaigns of William Brown McKinley, a United States representative from Illinois.

President of the United States and chief justice of the Supreme Court. Correspondence including letterpress books, speeches and addresses, presidential and judicial files, legal files and notebooks, family papers and letters, business and estate papers, engagement calendars, guest lists, scrapbooks, clippings, printed matter, memorabilia, and photographs documenting Taft's career.