Here are some more Jack Tippit panels, from the late 1950’s, about the cartoon rat race. These originally appeared in a monthly newsletter put out by Look Magazine Cartoon Editor Gurney Williams, and distributed only to the local cartoonists who visited his office on Wednesday, the official “Look Day”.
Speaking of “Look Day” Here’s another take on it by cartoonist Bob Barnes: 
This panel appeared in a 1950’s Saturday Evening Post article — the same article which featured a photo of all the cartoonists, in suits and ties, in the Post waiting room (these days, at the New Yorker showdown on Tuesdays, it’s strictly casual dress, including Bob Mankoff, the Cartoon Editor).
You can see that Saturday Evening Post photo, and my story about it, right here.