Read this strip at gocomics.com.
Another "Charlie Brown, Cartoonist" strip. Schulz used these a lot both to poke fun at himself and, perhaps, at other cartoonists. At the time, I think he was still working at
Art Instruction, Inc.
This strip is interesting for other reasons though. The look on Schroeder's face the whole time is fascinating. He isn't upset in the last panels; it's more like he thinks
Charlie Brown has rejected
him. Or maybe he's just sad that his criticism didn't find reception in CB's round head.