Thread: Farmer Giles of ham illustrat.
The editions of The Tolkien Reader I own, and the only ones I have ever seen containing the story, are in the 1970 Ballantine paperback edition and the current Del Rey (Ballantine) edition, with the Professor's "weird hair" on the cover as shown in the link in Elanorraine's above post. Both my copies have the same illustrations. I have never seen this story in a hard cover edition, let alone a first edition.
Galin may have more definitive knowledge on this topic?
I typed "Farmer Giles of Ham" into the Amazon.com search engine (not the .uk one, though). There are plenty of used editions up for sale - including 2 that (without pictures) claim to be 1st edition (US) hardback copies in "Acceptable" condition, former library copies. They were going between USD $15.00 and $30.00.