[SB 1] title page

[SB 2] 'wit/weiss'
titled and signed on the reverse

[SB 3] [untitled (collage trouvé)] 1958
textile on board; signed and dated on the reverse (graphite pencil)

[SB 4] [untitled] 1959
black paper on paper; signed 'her' on the front (graphite pencil) and dated 'wageningen 2/9/1959' on the reverse (graphite pencil)

[SB 5] [untitled] 1959/1968
printing ink on paper; signed, dated and numbered on the front (graphite pencil) and inscribed 'gedrukt in 1968' on the reverse of 12/12 and the a.p. (graphite pencil); edition 12, this number 2

[SB 6] [untitled] 1960
mixed media on cardboard; dated '6-11 april + 25 sept. '60' on the reverse (graphite pencil)

[SB 7] [untitled] 1960
black paper and tinfoil on paper; signed and dated 'her '60' on the front (graphite pencil) and dated 1-7 oct. '60' on the reverse (graphite pencil)

[SB 8] [untitled] 1960
collage with unknown material; dated '5 oct. 1960' and notes '- gedeeltelijk afgescheurde kollage uit één stuk -' on the reverse (graphite pencil)

[SB 9] [untitled (reflecties)] 1960
white paint and glass beads on paper; signed and dated 'her 19 nov. 1960' on the front (graphite pencil) and - refelectie -' on the reverse (graphite pencil)

[SB 10] [untitled] 1960 [1962?]
white paper squares, arranged alternately in a 5 × 7 grid pattern, on paper

[SB 11] [untitled] 1961
paint on paper (6.5 × 6.5 cm); signed 'her' and dated '24 3 61' on the reverse (graphite pencil)

[SB 12] [untitled] 1961
white paper square on paper; signed and dated 'maart 1961' on the reverse (graphite pencil) [?]

[SB 13] [untitled] 1961
collage with shiny paper

[SB 14] radering 1961
sheet of white paper divided in two parts by tear line (motif size 15 × 21 cm); titled 'radering', signed, dated 'mei 1961' and numbered on the reverse (graphite pencil); edition 10, this numbered 10/10

[SB 15] [untitled] 1961
brown paper squares on brown paper; signed and dated on the reverse (graphite pencil) [?]

[SB 16] [untitled] 1961
brown paper squares on brown paper; signed and dated on the reverse (graphite pencil) [?]

[SB 17] [untitled] 1961
2 brown paper squares on brown paper; signed and dated on the reverse (graphite pencil) [?]

[SB 18] [untitled] 1961
numbers (with numerator) on paper; signed and dated on the reverse (graphite pencil) [?]

[SB 19] random objectivation 1962
black paper squares, arranged in a 4 × 4 grid pattern with random selection to place the element or not, on black paper; signed and dated '15-10-1962' on the reverse [?]; the collage was exhibited in 1970 in 'herman de vries. random objectivations', Kunsthistorisch Instituut, Amsterdam (catalogue number 3)

[SB 20] at random 1962/63
30 squares of coloured paper, arranged in a 6 × 5 grid pattern with at random selection of colour, on paper (motif size 27 × 21 cm); titled 'at random', signed and dated 'november 1962-26/1/63' on the reverse (graphite pencil)

[SB 21] random objectivation 1963
11 white paper squares, arranged in a 4 × 8 grid pattern with at random choice to place the element or not, on paper; signed and dated '16-3-1963' on the reverse (graphite pencil)

[SB 22] wit op wit 1963
white paper square, arranged at an at random selected angle, on paper (motif size 32.8 × 32.8 cm); titled 'wit op wit', signed and dated '17-3-1963' on the reverse (graphite pencil). The work 'wit op wit [= white on white]' forms a duo with the simultaneously created 'wit op zwart [= white on black]'

[SB 23] [untitled (yellow printing)] 1963
yellow printing ink on paper; signed and dated on the reverse (graphite pencil) [?]; edition 2, this numbered 1/2

[SB 24] camp at random 1964
vertical white paper strips placed at random, on paper (motif size 21.4 × 27.4 cm); signed and dated '1/2/1964' (graphite pencil) + custom stamp on the reverse

[SB 25] 1 × at random 1964
1 small white paper square, placed at random, on paper; dated '9 maart 1964' on the reverse (graphite pencil)

[SB 26] 1966/62 toevalsobjektivering 1966
17 black paper strips (1 × 7.5 cm), arranged based on the coordinates x and y and the distance of the beginning of the strip, related to the coordinates, on paper (motif size 20 × 20 cm) [program as 1966/52]; dated/work number '1966/62' on the reverse (graphite pencil)

[SB 27] V67-43 random objectivation 1967
36 white paper rectangles (1 × 2 cm), distributed on a grid pattern with at random direction (degrees) from the corners of the grid, on paper (motif size 16 × 16 cm); dated/work number 'V67-43' on the reverse (graphite pencil)

[SB 28] V67-46 random objectivation 1967
3 paper strips (1 × 15 cm), distributed with at random selection of place and colour (red, blue and yellow), on paper (motif size 20 × 20 cm); dated/work number 'V67-46' on the reverse (graphite pencil)

[SB 29] V67-67 at random situated lines in a follow-up 1967
5 white paper strips (1 × 14 cm), distributed at random, on paper (motif size 15 × 15 cm); dated/work number 'V67-67' on the reverse (graphite pencil)

[SB 30] V67-71 randomised figure 1967
2 black paper strips (1 × 15 cm), distributed with at random selection of location and direction (but they should touch each other), on paper (motif size 16 × 16 cm) [program as V67-69]; dated/work number 'V67-71' on the reverse (graphite pencil)

[SB 31] V67-72 randomised figure 1967
2 black paper strips (1 × 15 cm), distributed with at random selection of location and direction (but they should touch each other), on paper [program as V67-71] (motif size 16 × 16); dated/work number 'V67-72' on the reverse (graphite pencil)

[SB 32] V68-79 random objectivation 1968
30 white paper squares (1 × 1 cm and 2 × 2 cm), distributed with at random selected place, size and direction, on paper (motif size 24 × 24 cm); dated/work number 'V68-79' on the reverse (graphite pencil)

[SB 33] V68-234 a.r. [= at random] 1968
white paper strips (1 × 10.5 cm), distributed from each side with at random selected number (1-9) and direction, on black paper (motif size 27 × 27 cm); dated/work number 'V68-234' on the reverse (graphite pencil)

[SB 34] V69-09 a.r. [= at random] 1969
series of 5 identical drawings with red and black ink lines, arranged with at random selection of colour (red/black), number [= 17] and place of the starting and ending points of lines, on paper (motif size 32.8 × 32.8 cm); signed, dated/work number 'V69-09' and numbered on the reverse (graphite pencil); edition 5, this numbered 2/5

[SB 35-37] V69-32a-c 1969
3 drawings with dot in black ink with at random selected place, on paper (motif size 32.8 × 32.8 cm); signed and dated/work number 'V69-32a[-c]' on the reverse (graphite pencil)

[SB 38] handwritten text of 'let's be rational' (motif size 32.8 × 32.8 cm)

[SB 39] V69-33 a.r. [= at random] 1969
starting from a randomly chosen point on one side and connecting a randomly selected point on one other side etc. till the end of at random selected number of lines (= 50), black ink on paper (motif size 32.8 × 32.8 cm); signed and dated/work number 'V69-33' on the reverse (graphite pencil)

[SB 40] V69-34 re-emotionalisering 1969
81 squares (2 × 2 cm) cut from a magazine (portrait of a girl) reassembled with at random selection of place and direction of the squares, on paper (motif size 18.4 × 18.4 cm); signed and dated/work number 'V69-34' on the reverse (graphite pencil)

[SB 41-43] V69-36a-c eb en vloed 1969
3 drawings with a line exactly in the middle (a), a line 0.5 cm below the middle (b) and 1 cm below the middle (c); in black ink on paper (motif size 32.8 × 32.8 cm); signed and dated/work number 'V69-36a[-c] on the reverse (graphite pencil)

[SB 44] V70-10 colours at random 1970
horizontal and vertical lines from side to side with at random choice of colour; coloured ink on paper (motif size 32.8 × 32.8 cm); signed and dated/work number 'V70-10' on the reverse (graphite pencil)

[SB 45] V70-11 a.r. [= at random] 1970
line connecting points with randomly selected number and place, starting at 'a' and ending at 'e'; black ink on blue graph paper (motif size 29.7 × 21 cm); dated/work number 'V70-11' on the reverse (graphite pencil)

[SB 46] V67-15 1967
black slashes by the typewriter are typed in blocks, distributed at random with the same number of keystrokes; printing ink on paper (mimeographed) (motif size 24.5 × 16.5 cm); dated/work number 'V67-15' on the front (printed) and numbered and signed on the reverse (graphite pencil); edition 20, this numbered 6/20

[SB 47] sketches and notes for SB 48 and SB 49

[SB 48] V70-23 random colour structure 1970
coloured cardboard (for Ahrend planning board) squares (3 × 3 cm), arranged in a 10 × 10 grid pattern with at random selection of colour (10 colours), on board (motif size 30 × 30 cm); signed and dated/work number 'V70-23' on the reverse (graphite pencil)

[SB 49] V70-18T random colour structure 1970
colour paper (for Ahrend planning board) squares (3 × 3 cm), arranged in a 10 × 10 grid pattern with at random selection of colour (10 colours), on paper (motif size 30 × 30 cm); signed and dated/work number 'V70-18T' on the reverse (graphite pencil)

[SB 50] V67-26 1967
dots by the typewriter, placed inside vertical areas of 14 keystrokes alternating between 30% and 70% coverage at random, printing ink on paper (mimeographed) (motif size 29.7 × 21 cm); signed, dated/work number 'V67/26' and numbered on the reverse (graphite pencil); edition 26, this numbered 24/26

[SB 51] V71-101 1971
on the intersections of a 3 × 3 cm grid, dots are arranged with at random selected size (5 sizes); black ink on paper (motif size 30 × 30 cm); signed and dated/work number 'V71-101' on the reverse (graphite pencil)

[SB 52] V71-109 1971
dots (in 5 sizes) arranged on the intersections of the lines of a 1 × 1 cm grid; for each group of 4 crossings one dot with at random size, black ink on blue graph paper (motif size 15 × 28 cm) [program as v71-102]; dated/work number 'V71-109' on the reverse (black ink)

[SB 53] V71-117S 1971
horizontal lines at a distance of 5 mm with at random choice of colour (black/red), coloured ink on paper (motif size 22 × 22 cm); dated/work number 'V71-117S' on the reverse (ink); created in cooperation with susanne jacob de vries (S)

[SB 54] tautological postcards
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
on the intersections of 10 guides connecting randomly selected sides and points, circles are placed with random diameter (2-10 cm), black ink on paper (motif size 32.8 × 32.8 cm); signed and dated/work number 'V72-33S' on the reverse (graphite pencil); ; created in cooperation with susanne jacob de vries (S)

[SB 56-57] v72-162 I-II 1972
8 colour prints of the Merwede east of Gorinchem on April 12, 1972; the photos were taken every 3 minutes: 16:07 [left out], 16:10, 16:13, 16:19, 16:19, 16:22, 16:25, 16:28 and 16:31 (each photo 9 × 12 cm)

envelope with leaf 1978