Long before the age of digital, photographers would send physical prints to the papers and magazines. These prints were passed around, handled by many, stamped on the back, and often times captioned. After use, the prints were either filed away, thrown out or - for the lucky few - sent back to the photographer or their photo agencies.
At the dawn of the 1960s, when O'Neill's career began, physical prints were the norm. Terry kept as many as he could that were sent back to him. "I just kept everything," he says. "I don't know why. Back then, there wasn't really a reason to keep them. Photos were used straight away and then I just moved on to the next assignment. No one was thinking these would be worth anything down the line, let alone fifty years later."