----- Box 54, Folder 321 Bookmark Collection Context Series II: Artwork and Sketchbooks, 1949-1999Sketch books, Pratt sketches/drawings
(12) Miscellaneous sketches -small, undated Box 60, Folder 445 Bookmark Collection Context Series II: Artwork and Sketchbooks, 1949-1999Miscellaneous sketches
(13) Miscellaneous sketches on tracing paper, undated Box 60, Folder 453 Bookmark Collection Context Series II: Artwork and Sketchbooks, 1949-1999Miscellaneous sketches