Willy Sluiter, 1922, text sheet, RP-P-2018-1165
Willy Sluiter (possibly), 1937, drawing, RP-T-2021-402
Willy Sluiter, c. 1900 - c. 1940, print, RP-P-2022-1017
Willy Sluiter, 1897, print, RP-D-1986-19-858
Willy Sluiter, 1922, print, RP-P-2022-1960
Willy Sluiter, 1921, letter, RP-D-1958-611
Willy Sluiter, 1916, print, NG-1979-159-C-11
Willy Sluiter, 1916, print, NG-1979-159-C-15
Willy Sluiter, 1916, print, NG-1979-159-C-7
Willy Sluiter, 1916, print, NG-1979-159-C-16
