MYSTERY MEN COMICS, Vol 1, No. 1. Published monthly by Bruns Publications, Inc., V. S. Fox, President, 480 Lexington
Avenue, New York, N. Y. Office of publication, 29 Worthington St., Springfield, Mass. Application for entry as second-class matter at the Post Office at Springfield, Mass., pending. Price 10 cents per copy. Subscription rates: 12 issues in the United States, its possessions, Mexico, South America, Spain, $1.50. Elsewhere, $2.50. The Publisher accepts no responsibility for unsolicited material. Copyright 1939, by Bruns Publications, Inc. Printed in the U.S.A.
takes place after 1st story in Green Mask, The (Fox, 1940 series) #1
Blue Beetle wears business suit, mask, and hat in this story; no apparent super-powers; story chronologically follows 1st story in Blue Beetle (Fox, 1939 series) #1
This Blue Beetle was published by Fox, then Holyoke, then Fox again, and then Charlton before Charlton revamped Dan Garrett Blue Beetle with a new origin and powers in 1964, and later replaced him with a new Blue Beetle (Ted Kord) in 1967.
Throughout his early appearances, the Blue Beetle's last name varied between "Garret" and "Garrett", while Mike Mannigan sometimes had his last name spelled "Manigan".