New York. Museum of Modern Art. David Smith, 1957

Schwartz, A. David Smith, c1987: página 90 (David Roland Smith, n. 3/9/1906) p. 91 (m. 5/23/1965)

Sculpture by David Smith in the Storm King Art Center collection, 1971: página final (American painter and sculptor)

Devid Smit, c1999: página 227 (David Smith 1906-1965)

Union List of Artists Names Online, sitio web, 26 mayo 2016: (Smith, David (American sculptor, 1906-1965) Names: Smith, David; David Smith; Smith, David Rowland; David Rowland Smith; Smith, David RoLand; David RoLand Smith; Smith, W; Smith, David Roland; Smit, Deṿid) http://www.getty.edu/vow/ULANFullDisplay?find=Smith%2C+David&role=&nation=&prev_page=1&subjectid=500015402

RKD artists, sitio web, 26 mayo 2016: (David Smith (1906-1965), male / American sculptor, painter, photographer. Born: Decatur, Indiana, 1906-03-09; Deceased: Bolton, Lancashire, 1965-05-23) https://rkd.nl/explore/artists/73389

Wikipedia, 26 mayo 2016: (Roland David Smith (March 9, 1906 – May 23, 1965) was an American abstract expressionist sculptor and painter, best known for creating large steel abstract geometric sculptures.)