Whitney, Helen Mar, 1828-1896 -- Diaries. / https://id.loc.gov/authorities/names/nr97033741 https://id.loc.gov/authorities/subjects/sh99001602 : Whitney, Helen Mar,
Whitney Museum of American Art -- Catalogs. / https://id.loc.gov/authorities/names/n79032811 https://id.loc.gov/authorities/subjects/sh99001246 : Whitney Museum of American Art.