The Scarecrow of Oz, while not the best of Baum's Oz books, nevertheless contains some unforgettable characters. Of course, Trot, Cap'n Bill, Button-Bright, and the great Scarecrow himself are favorites. But this particular volume introduces such unforgettable personages as the featherless Ork, with his propeller tail, the Bumpy Man who lives in the Land of Mo, and the romantic Gloria and Pon. While these characters are memorable, the story is weak in the classic plot of strange characters and countries encountered while traveling. The only traveling in Oz, after the problems of Gloria and Pon have been solved, is made quite fantastically luxurious by the Wizard and the Scarecrow's little mishap seems to be an afterthought.
Verdict: It's worth reading for the dedicated Oz fan, and those not in love with all things Ozzy will find it worthwhile to read about the strange Ork and the magical Land of Mo. If your library collections Oz books, go ahead and add it, but otherwise it's not one you need - stick to the first three Oz titles for your basic collection.
ISBN: Various; Published by many different publishers at different times, there are several reprints currently available; Purchased for my collection (cheap paperback edition, I'm still looking for one of the older editions)