ARTS MAGAZINE, 1965
By Jacob Grossberg
Joop Sanders: Sanders is a geometric painter somewhat akin to Kelly, but more complicated. There is the same play between the figure and ground, though Sanders uses bits and pieces of color which often lack the inevitability necessary to make this kind of geometry work. His best pieces are the simplest—black and white forms: stark, formal, commanding paintings. In these, he is a fine artist. (Bertha Schaefer.)—J. G.
Arts Magazine Sept-Oct 1965 P. 68