Issued by Audit Bureau of Circulations Chicago. Each is 8.5x11” with eight b/w sheets printed on 15 of 16 sides stapled together at left. Figures include subscriptions, single copy sales, sales to military, lists of titles inc. when first published, and circulation data by state. Seven “National” reports run from third quarter 1947- second quarter 1950 and come w/ten loose pink paper supplement folders w/four pages as issued, including two different ending Dec. 31, 1956. Titles include” Superman, Action, Batman, Detective, All Star, Adventure”. “Marvel Comic Group” has four audit reports ranging from first quarter 1949 to fourth quarter 1950 along w/nine loose pink paper four page supplement folders as issued. Titles include “Captain America, Marvel Mystery Comics, Marvel Tales, Wonder Duck”. Last item is loose pink paper four page supplement folder for Quality Comics dated Dec. 31, 1956. Titles include: “Plastic Man, Blackhawk, T-Man”. A bit of staple oxidation here and there w/a few pages pulled loose, otherwise reports are complete and VF/ Exc. Fascinating reading w/extremely limited in-house distribution.