SB 1a title page
SB 2 'wit/weiss' (signed on the reverse)
SB 3 [untitled (collage trouvé)]
SB 4 [untitled] (1959)
SB 5 [untitled] print 2/12 (1959)
SB 6 [untitled] (1960)
SB 7 [untitled] (1960)
SB 8 [untitled] (1960)
SB 9 [untitled (reflecties)] (1960)
SB 10 [untitled (homogeneous structure)] (1962)
SB 11 [untitled] (1961)
SB 12 [untitled] (1961)
SB 13 [untitled] (1961)
SB 14 radering multiple 10/10 (1961)
SB 15 [untitled] (1961)
SB 16 [untitled] (1961)
SB 17 [untitled] (1961)
SB 18 [untitled] (1961)
SB 19 random objectivation (1962)
SB 20 random objectivation (1962/63)
SB 21 random objectivation (1963)
SB 22 [untitled (wit op wit)] (1963)
SB 23 [untitled (yellow printing)] print 1/2 (1963)
SB 24 camp at random (1964)
SB 25 1 × at random (1964)
SB 26 1966/62 toevalsobjektivering (1966)
SB 27 v67-43 random objectivation (1967)
SB 28 v67-46 random objectivation (1967)
SB 29 v67-67 at random situated lines (1967)
SB 30 v67-71 randomised figure (1967)
SB 31 v67-72 randomised figure (1967)
SB 32 v68-79 random objectivation (1968)
SB 33 v68-234 random objectivation (1968)
SB 34 v69-09 random objectivation drawing 2/5 (1969)
SB 35-37 v69-32a-c (1969)
SB 38 handwritten text of 'let's be rational' (see additional images)
SB 39 v69-33 random objectivation (1969)
SB 40 v69-34 re-emotionalisering (1969)
SB 41-43 v69-36a-c eb en vloed (1969)
SB 44 v70-10 colors at random (1970)
SB 45 v70-11 random objectivation (1970)
SB 46 v67-15 print 6/20 (1967)
SB 47 sketches and notes for SB 48 and SB 49 (see additional images)
SB 48 v70-23 random color structure (1970)
SB 49 v70-18t random color structure (1970)
SB 50 v67-26 print 24/26 (1967)
SB 51 v71-101 (1971)
SB 52 v71-109 (1971)
SB 53 v71-117s (1971)
SB 54 missing in the SOHM BOEK, but still in the archive of herman and susanne de vries (the postcards with work number v72-18 were never sent)
SB 55 v72-33s (1972)
SB 56-57 v72-162 I-II (1972)
envelope with leaf (1978)