Does anyone own a copy of this? I never was able to find one back in the day (1970s). However, I do still own the follow-up, Marvel's The Marvelous Land Of Oz. In the back of that issue, there is an advertisement for the 3rd issue, Ozma Of Oz. And while there is a front cover for that issue, I don't believe the full comic was ever created or released.
By the way, as a huge fan of The Wizard Of Oz I did have all 14 of the softcover Oz books that Frank Baum wrote.
https://www.cbr.com/wizard-of-oz-fir...-dc-crossover/