A dutch book showing the amateur drawings from a naval engineer, currently for sale via auction.
More than 4000 drawings were made by an American naval engineer with BDSM images (bondage, dominance, sadism, masochism) in the period 1960-1970.

Bert Sliggers found these drawings on an auction site and tried to find more info on the artist. As mentioned he was a naval engineer, his house was cleared and all his belongings were sold. In the basement the (hidden) bondage drawings were found, as well as hundreds nude photos, bondage magazine en sexmagazines from the fifties.
The identity of the artist is kept hidden because his family never knew about his seksual desires, or his enormous collection.

There is a book published, by Bert Sliggers, with the artworks titled ‘A drawing a day’