Army officer and surgeon. Mainly a journal of Hack’s medical service in the United States Army in the Philippines, 1901-1903, two manuscripts, portions of the Koran, in Arabic, and one Arabic-script manuscript in Maranao, a native Philippine language from Mindanao, an excerpt from the epic “Darangen.”

Physician, surgeon, educator and author. Mainly scrapbooks of correspondence, telegrams, military documents, photographs and clippings relating to Hamilton’s medical career in the Union Army during the Civil War and his role in the treatment of James A. Garfield before his death by assassination in 1881.

Naval surgeon and author. Correspondence, daybooks, medical journals, manuscripts of Horner's published books, registers of weather, and printed matter, chiefly relating to Horner's career as a naval surgeon.

Ophthalmologist and surgeon. Correspondence, diaries, speeches and writings, reports, laboratory notes, subject files, biographical material, certificates, awards, newspaper clippings, and other papers documenting Koller's career.

Army officer and surgeon. Correspondence, biographical material, and printed matter relating in part to Myer's service as a surgeon in the army and his role in the founding and development of the Signal Corps, including during the Civil War.

Army officer and surgeon. Microfilm focusing on Myer's service in the Signal Corps and documentation of his work in meteorology, including correspondence, biographical material, letterbooks, diaries, reports, memoranda, legal and business papers, and printed matter. Also contains papers of his father-in-law, Ebenezer Walden, and material relating to a patent by his father, Henry Beekman Myer, for the railway sleeping car.

Naval surgeon. Correspondence, speeches, articles, and notes relating mainly to Pinkney's surgical cases in Peru, his observations on the Mexican War and Civil War, his plan to reorganize the Army Medical Corps, and his interest in politics.

Army officer, surgeon, and diplomat. Correspondence, diaries, speeches, military papers, subject files, biographical data, scrapbooks, newspaper clippings, maps, photographs, and other papers relating primarily to Wood’s career in the United States Army, including his participation in the Apache Wars, especially the campaign to capture Geronimo. Also documents Wood's service as military governor of Cuba, and later, of Moro Province, Philippines.