One other example of "Carpe Errata" (will someone fluent in Latin correct this - "Seize the Error"?) - from a rumored darkroom incident. The "Sabby" referred to here is Sabbatier:

Man Ray: "Dammit, Sabby, the red light!! Don't just walk into the darkroom with the red light on ...!!!
Aiiee!!! ... and I'm developing a print ... well, let's see what happened before I toss this one ..."