Who made the most issues of this run, with the issues they span.
Catalog data from the Grand Comics Database is licensed CC BY-SA 4.0 and was normalized by The Collector. Cover images belong to their publishers.
Who appears most often in this run, by issues they appear in.
Series contents produced by Funnies, Inc., of which John Mahon was treasurer (at least early on according to a letter from Bill Everett to Jerry DeFuccio printed in the fanzine The Comics #10 and requoted in Blake Bell's "Fire and Water").
According to Mike Feldman on the comics-pub list, distributor P.D.C. likely brought this project into Alfred Harvey's 100-page pocket size experiment in order to take advantage of 4-up cover printing along with Harvey's Pocket and Speed Comics and a gag magazine called Fun Parade.
From the Grand Comics Database.