Published in Autumn 1980 Zeiss Historica Journal (Folio Two)
Author: Hubert Nerwin
See Pages 7 – 16 You will need to search the full journal to find the pages as marked.
Hubert Nerwin describes some special designs of everyday items to function as cameras and accessories for the use of spies during World War II.
To go to the Journal itself, click on the year 1980 in the first line above.