Charles Rodrigues

I was cleaning out some bookshelves and I came across the little book of cartoons called "Total Harmonic Distortion" by Charles Rodrigues.......of his cartoons that were originally in Stereo Review..........the cartoons are hilarious and painfully true......anyone else remember his cartoons about our "serious" hobby?
I have one. I wonder how much it would go for here or on eBay?
I remember him well for the cartoons that appeared in HiFi/Stereo review.
I also own a copy. Funny stuff! Love the drawing style that he had. Also am proud to say that while I never came in first place, I was one of the 5 runner's up, in two different "Rodrigues Caption Contests" that Stereo Review used to run annually -- remember those??