U. S. secretary of labor and senator from Pennsylvania. Correspondence, diaries, speeches and writings, investgation files, financial papers, scrapbooks, photographs, and printed matter relating to Davis's service as secretary of labor in three Republican presidential administrations, his tenure as senator from Pennsylvania, and as organizer and leader of the Loyal Order of Moose.

Lawyer and government official. Correspondence, letterbooks, diaries, speeches, articles, photographs, and near-print and print material relating to the presidential candidacy of Woodrow Wilson, Thompson's service as legal counsel in the investigation of the Tennessee Valley Authority in the 1930s, and his service as mediator in national industrial strike emergencies.