Fans of cats in hats and pops being hopped on learned on Wednesday that a new Dr. Seuss book is on the way: in July, Random House will published What Pet Should I Get?, a manuscript the late and legendary writer likely completed in the late 1950s or early ’60s but never published.
Just a few months ago, several stories that Seuss wrote for Redbook in the 1950s were published under the title Horton and the Kwuggerbug and More Lost Stories. In honor of that released, we combed TIME’s archives for some Seuss-ian history, and turned up these five facts:
Now, in honor of the new story coming to light, here’s another fact to add to the list: Dr. Seuss said that he thought the idea of academic analysis of his work was pretty silly. His books were, as he put it, “logical insanity.”
Read the full 1967 profile of Dr. Seuss here, in TIME’s archives: The Logical Insanity of Dr. Seuss