Smithsonian Amer. Art Mus./Nat. Portrait Gallery Library vertical file (from 1977 exhibition announcement: Lawrence Atkinson)

Dict. of British artists working 1900-1950, 1975: volumen 2 (Atkinson, Lawrence; Vorticist painter; b. 1873; d. 1931)

Allgemeines Künstler-lexikon, 1992 (Atkinson, Lawrence; English painter, sculptor, author, poet, musician, singer; b. Jan. 17, 1873, Chorlton upon Medlock b. Manchester; d. Sept. 21, 1931, Paris)

Union List of Artists Names Online, sitio web, 23 febrero 2017: (Atkinson, Lawrence (English painter and sculptor, 1873-1931) Names: Atkinson, Lawrence; Lawrence Atkinson; Atkinson, Laurence) http://www.getty.edu/vow/ULANFullDisplay?find=ATKINSON%2C+LAWRENCE&role=&nation=&prev_page=1&subjectid=500002487

RKD artists, sitio web, 23 febrero 2017: ( Lawrence Atkinson, male / English sculptor, painter. Born: Manchester (England), 1873/1875; Deceased: Paris, 1931) https://rkd.nl/explore/artists/2854

Wikipedia, 23 febrero 2017: (Lawrence Atkinson (1873–1931) was an English artist, musician and poet.) https://en.wikipedia.org/wiki/Lawrence_Atkinson