Old and young, big and small, flaccid and aroused, all ages (18+), shapes, and sizes.
And, if I had the time and inclination, I could easily look at 300 more.
When I was growing up in Rock Island, and even through my years in West Hollywood in the 1980s and 1990s, you might see ten pictures of naked men per month, if you were lucky.
They were glossy photos of professional models in expensive magazines.
Nude photos of amateurs were extremely rare. Photo labs wouldn't develop them, so you had to have your own darkroom.
Even shirtless photos were rare. Occasionally a shirtless celebrity would show up in a movie magazine. Or you could look at the underwear ads in clothes catalogs.
Beginning around 1990, you could buy cameras that developed the pictures on the spot, so you didn't need a photo lab. Suddenly you could get nude photos.
But only of your friends, who you had seen naked in real life. There wasn't much point.
The full story, with nude photos, is on Tales of West Hollywood.