Reddit reviews First Editions of Dr. Seuss Books: A Guide to Identification

Personally, Grosset & Dunlap were a sneaky, less than honest publishing company. To my knowledge, they never published anything original. If I see their name, I completely dismiss the book. I've seen them sold in bookstores as first or special editions by people who should know better. Or perhaps those booksellers are also less than ethical.

I have a copy "First Editions of Dr. Seuss Books: A Guide to Identification" by Helen Younger & Marc Younger (https://www.amazon.com/First-Editions-Seuss-Books-Identification/dp/1892168081) which is very good, although they've made several corrections to it. I sent Ms. Younger a note of appreciation and thanked her profusely for having done all that work. She replied that had they known how much work it would actually be, they never would have begun the project in the first place. She sounded rather bitter about it.

Since then, the internet has become a more robust and reliable (sometimes) resource for helping identify various editions but my go-to guides are still "A Pocket Guide to the Identification of First Editions Paperback" and "Points of Issue: A Compendium of Points of Issue of Books by 19th-20th Century Authors" both
by Bill McBride.