(Only a bit about language, and given the topic, not for kids or the sexually modest.)
The subject of the 2009 book:
Escort: 40 Profiles with Photographs of Men Who Sell Sex (text by David Leddick and Heriberto Sanchez, photographs by David Vance)
(#1)
(cover model: Stefan Pinto)
Leddick has a significant career writing about male nudes and male photography, and Vance is a well-known male photographer (though almost always modest in his work, concealing genitals in one way or another, as in the cover photo).