Ed Emberley

Toyoi Yuuta (1041uuu)

http://1041uuu.tumblr.com/

Conrad Felixmüller

Rudolf Modley

https://www.fulltable.com/iso/rm/rm.htm

Gerd Arntz

http://www.gerdarntz.org/

Heinrich Hoerle

Augustin Tschinkel

http://www.artnet.com/artists/augustin-tschinkel/past-auction-results

Franz W. Seiwert

https://libcom.org/files/Art%20as%20a%20weapon%20Franz%20Seiwert%20and%20the%20Cologne%20progressives%20-%20Martyn%20Everett.pdf

Charles Sheeler

«En estas pinturas trato de reducir las formas naturales a sus fronteras abstractas, 
reteniendo sólo aquellas que considero indispensables en el diseño del cuadro»

Niles Spencer

http://www.artcyclopedia.com/artists/spencer_niles.html

Charles Demuth

http://www.demuth.org/
http://www.demuth.org/?pID=66

Alick P. F. Ritchie

http://www.npg.org.uk/collections/search/person/mp07891/alexander-alick-penrose-forbes-ritchie