"I'm anxious to see the Sketchbooks come out," sez R. Crumb. And all comics fans should be, too, for the R. Crumb Sketchbook series reprints Crumb's personal sketchbooks, the immediate products of Mr. Obsessive Sketcher's genius. Personally selected by the artist, the drawings in these volumes include much material never seen before, not even in the German "2001" editions of the sketchbooks (which are long out of print anyhow). Volume 5 covers 1967...