Roz Chast is interviewed in a career spanning article by Richard Gehr at TCJ.com.
You went in with your batch of maybe ten or twelve cartoons – it varied from person to person – and these were rough sketches. There was a little waiting room outside Lee’s office where you’d sit around with the other cartoonists. Lee would see you in the order in which you arrived. So you’d come in and they’d say, “There are two people in front of you – Bernie [Schoenbaum] and Sam [Gross] are going in, and then it will be your turn.” You would hand over your batch to Lee and he would flip through it right in front of you. Horrible! And you’d wonder, is he smiling? Does he find that funny? Do all these cartoons suck? Why isn’t he laughing? They suck. I know they suck. Worst batch ever! And I still feel that way. At some point they’re just going to say, “You know what? You’re horrible. You’re not funny anymore. Just go! This was a big mistake. Out!” Finally, if they’d bought anything during their previous art meeting, he would pull it out from this little folder and hand it to me. He usually wouldn’t say anything about it.
Hat tip to Comics Reporter!