One notebook kept by Hiram Powers from 1841 to 1845, which contains dated notations of letters written, receipts and expenditures, business contacts, works in progress, commissions and price quotations for work, comments on problems encountered during studio work, and other notes.
Studio Memorandum, 1841-1845. Hiram Powers papers, 1819-1953, bulk 1835-1883. Archives of American Art, Smithsonian Institution.
U.S. public domain
Archives of American Art, Smithsonian Institution Washington, D.C. 20560