Each circle numbered in blue pencil from "1" to "9" at left and right sides with corresponding number and notation in left margin. Five cutout strips (located at 6, 8, 10, 1 and 4 o'clock) marked in blue, red and graphite pencil, indicating immersion times: "10 m" (blue pencil), "15 m" (blue pencil), "20" (blue pencil), "30" (red pencil) and "40" (graphite pencil) respectively. Annotated in blue pencil, left margin in list format: "Outside to inside, 1. 6B interleaving, 2. blunt compass on Arches, 3. blunt compass < somerset, 4. blunt compass < on somerset, 5., sharp compass on Somerset, 6. blunt HB on news print, 7. blunt HB on newsprint and 9. burnish on arches (off center). Annotated in pencil, lower left: "5/21/93" and "weak acid 1:1". Verso marked in pencil, lower left: "RABI 213".