Space Alphabet

I recently started following Present & Correct on BlueSky. They share images of retro ephemera, which brighten your day in the midst of [all this]. 

One of their recent posts was about the cartoon modern children's book Space Alphabet from 1964. It turns out they posted all the pages on their website. The book was written by Irene Zacks and illustrated by Peter Plasencia.

Here are my favorite pages:

There's very little information online about Plasencia. I found this, which says he was born in 1926 in New York, includes the schools where he studied, and lists a few of the books he illustrated. It features some of the Space Alphabet illustrations, and a few from another book called Jules Verne: The Man Who Invented the Future.

Irene Zacks doesn't appear to have written other books, since all the references to her are related to Space Alphabet.