Size: 172 items (partially microfilmed on 2 reels)
Summary: Correspondence; photographs; writings; printed material; miscellaneous papers regarding Otis and his work collected by his niece, Grace J. Hartley.
REEL 266: Correspondence, biographical material, poetry, notes on Southwest Indians, lists of paintings, photographs of Otis and his work, sketchbooks, clippings, catalogs, announcements, and miscellaneous papers.
REEL 2813: Seven photographs of Otis' works; clippings; a biographical sketch, 1948; letters, 1973-1974; and exhibition announcements, 1974.
UNMICROFILMED: Photocopies of letters, clippings, announcements, and resumés. Included is a letter from Patricia Nixon to Hartley thanking her for a painting by Otis.