The Reiko Tomita Architectural Collection consists of 27 sketches, primarily design development sketches and conceptual studies, 1 towel design printed on fabric, and an annotated curriculum vitae. Sketches were made using a variety of media and supports: pencil, ink, crayon, and marker on tracing, heavy construction or multimedia paper, and cotton.

The towel was designed to commemorate Tomita's 80th birthday; close to 100 were made, each hand-dyed, as gifts for friends.