The nude is and always has been one the most popular subjects for photography. By far the greater proportion of the pictures was produced by men, for men. Thus they are representative of the general masculine imagination, or at least what the photographers assumed that to be.
To appeal to that male audience, many pictures were taken which portray fellatio. Lesbian activity features less than it would today, but male homosexual imagery is as explicit as it would Old erotic now, even though male homosexual acts were considered criminal at the time.
Of course, the most popular subject of all is heterosexual intercourse in all Old erotic myriad configurations. For the photographer who could capture such scenes, there was then, as there is today, considerable money to be made Minor marks and flaws else very good condition.
A very nice piece of Western erotica! Some minor folding marks. Minor marks and flaws! Look for the lovely detail of the man convincing the reluctant woman to join the threesome!