As the title implies, this book is a hodgepodge of work from throughout Robert Crumb's career, including some unpublished drawings and some that were published in obscure publications. There are even some renderings from his job drawing cards for American Greetings in Cleveland.
"Odds & Ends" was leant to me by a well meaning member of my book club who often brings novelties for me to try. To be fair, it probably isn't the best way to experience of Crumb's work for the first time.
Robert Crumb is a renowned artist with legions of fans. I don't have any deep insight into visual arts or graphic novels. Crumb might be considered a better artist than, say, Riad Sattouf, who wrote and drew the series "The Arab of the Future", which I very much enjoyed. The first volume of "Persepolis" by Marjane Satrapi is also not particularly well drawn, but very effective.
I confess that I find Crumb's art extremely unappealing. Every character is coarse and hideous to the point of revulsion.
Jim Unger's single frame "Herman" cartoons, which I read in childhood, also featured aggressively unattractive characters, but I vastly prefer Unger's to Crumb's work because Herman was really funny and the lumpy characters contributed to the humour.
Although I recognize that these are very different media and that Crumb is not always trying to be funny, he is trying to convey humour, satire or drama. Sattouf and Satrapi's drawings are more primitive than Crumb's, but to me, those artists are much more successful in evoking both comedy and drama than Crumb, partly because their simpler, cartoonish drawings didn't nauseate me.
Obviously, all art is highly subjective and your experience of this book may differ widely.