These studies for 10₂ were created between June and September 1981, on 35cm x 28cm sheets of vellum using techinical pens, felt-tip pens, ballpoint pens, graphite pencils, and/or colored pencils.

10₂ study A_1

10₂ study A_2

10₂ study A_3

10₂ study A_4

10₂ study A_5

10₂ study A_6

10₂ study A_7

10₂ study A_8

10₂ study A_9

10₂ study A_10

10₂ study A_11

10₂ study A_12

10₂ study A_13

10₂ study A_14

10₂ study A_15

10₂ study A_16

10₂ study B_1

10₂ study B_2