NOTE: This is a continuation of the previous "Zatara (Giovanni "John" Zatara) appreciation thread" which can be read here:
From the original thread (started in July of 2017)
Quote Originally Posted by MajorHoy

First appearing in the same issue as a certain Kryptonian, "Zatara Master Magician" was one of several features to debut in Action Comics #1 (June 1938).

It looks like Zatara appeared relatively regularly in Action Comics until issue #132 (cover-dated May 1949) and then sporadically until he disappeared from that title after issue #141 (February 1950). However, he also was appearing in World's Finest Comics starting with the first issue (which was actually World's Best Comics) cover-dated (Spring) 1941, with that gig lasting until issue #51 (April-May 1951).

When he next appeared, it would be when his daughter Zatanna began searching for her father in the 1960s, starting in Hawkman #4 (October-November 1964).