Actually there were several of Heinlein’s works that differed in several formats. My reader’s companion (indispensible, IMHO) doesn’t list any for Sixth Column, though.
I do know that my Galaxy copies that contain ‘Starship Soldier’ differ from the text in some ways from ‘Starship Troopers’.
Fenris, I really just got lucky one day. I know I have to take a back seat to your collection. I just throw money at mine, you seem a devotee.
It’s the essential annotated Heinlein bibliography. Well done. Warning, I ordered from Amazon and it took MONTHS (how’s that, Fenris) to arrive because the publisher doesn’t have a working agreement with Amazon. The link above is straight to the publisher.
I had a package ready to ship to London on September 10, 2001. I was going to go the post office on my day off–Wednesday, September 12, 2001. I finally mailed it Wednesday, September 19, 2001.