From International Signal Code Alphabet
Medium: Ink on paper with tracing paper overlay and collage Dimensions: Sheet: 8 1/2 x 11 in. (21.6 x 27.9 cm) Credit Line: Collection UCLA Grunwald Center for the Graphic Arts, Hammer Museum. Corita Kent Bequest. Accession No.: 1990.1.1143 Paper/Support: Paper Inscriptions: u.r. handwritten in pencil: "11 / print 10 + 11 together"; r.c. handwritten in ink: "enlarge page of writing to fill page from top to bottom / do in blue on white stripes drop out where letters go over red + blue letters will be while on blue + red stripes"; l.c. handwritten in ink: "print 2 big C's exactly in this place print them in blue"; verso, handwritten in pencil: "10 + 11"
"Untitled." Corita Kent in the Grunwald Center Collection. Los Angeles: Hammer Museum, 2017. https://hammer.ucla.edu/collections/grunwald-center-collection/corita-kent/art/untitled-preparatory-material-for-c-is-for-clowns-etc/.