Sketchbooks consist largely of Antonucci's studies of the human figure, in a variety of mediums--pen and ink, pencil, charcoal, and watercolor. Many of these sketches were early versions of designs used in his later book design and illustrations. Also included among the sketchbooks are various prints produced by Antonucci for more professional functions, such as business cards, telephone cards, and holiday cards. Other materials include notes on Journeyman and Hand Press publications.

Many of the drawings are examples of the line drawings used by Antonucci in his illustrated first edition of John Gardner's Grendel (1971).