In the 1940s, National Periodicals began to carry educational features scattered throughout the pages of its comics. One such feature, written and drawn by unidentified creators, was the “Animal Alphabet”. These were half vertical pages pairing a cartoony animal with a short rhyme – and a plug for a current comic thrown in for good measure.
Arthur Lortie has gone and collected all of these features on The DC Alphabet, featuring good scans of each of the 25 episodes (indeed, DC stopped at Y).