The papers of painter and muralist Harry Siddons Mowbray (1858-1928) and the Mowbray family measure 7.5 linear feet and date from 1872 to 1976. The papers document Mowbray's career as a painter and decorative muralist as well as his activities with the Commission of Fine Arts, the American Academy in Rome, and the Sculpture Commission of Connecticut. The papers include biographical materials, scattered correspondence, nineteen diaries, personal business records, commission files, organization files, writings and notes, printed materials, three scrapbooks, photographs, and artworks. There are scattered family papers of Helen Mowbray, Florence Mowbray, George Mowbray, and George Siddons Mowbray.
The records of the American Academy in Rome measure 65.9 linear feet and date from 1855 to 2012. The collection documents the history of the institution from its inception in 1894 as the American School of Architecture in Rome, through the end of World War II, and chronicles the contributions the academy has made to America's cultural and intellectual development. Nearly one-half of the collection consists of an unprocessed addition received in 2014 containing records that mostly post-date World War II and include correspondence and subject files of officers and executives based in the New York office of American Academy in Rome.