DeCourcy, Ken: Patently Obscure ©1964 Ken De Courcy, The Supreme Magic Co, Bideford, England Softcover, tape-bound, 8.5x11", 10 pages

Image courtesy eBay seller  allineedisaroomsomewhere

Comments: Not magic, but rather a full comedy routine around an inventor, with visual gags and jokes, and details of making an attache-case that can vanish all the props used.

Contents (Courtesy Denis Behr's ConjuringArchive):

2 Patently Obscure: the act, with jokes, etc.
8 Supplement to "Patently Obscure": how to build the case to vanish the props