Title
Photographic Process Relief Surfaces teaching kit.
Description
Among the many custom-made teaching aids at RBS is a set of twelve kits that contain a range of relief printing surfaces made using different photographically assisted processes. Each kit includes at least one process line block, halftone block, and photopolymer plate (as well as a small electrotype block and zinc tint block), along with labeled printed proofs for each, thus allowing each student in RBS classes to compare these various forms.
Source
From the collection of Rare Book School