Editorial address during the 1939-1941 period: 330 W. 42nd St., N. Y., N. Y.
Publication addresses:
* Marvel Comics #1: 81 Spring St., Newark, N. J.
* Dec. 1939 - May 1940 (Marvel Mystery [#5-7 unconfirmed] and Daring Mystery): 8 Lord St., Buffalo, N. Y.
* June 1940 onwards: Meriden, Conn. [Marvel Mystery #8 unconfirmed]
Mystic Comics #1 and #2 (March and April 1940) give no separate publication address and filed for 2nd class status in New York, N. Y. Mystic Comics #3 (June, 1940) gives no separate publication address but filed for 2nd class status in Meriden, Conn. As of #4, the publication address is Meriden, Conn.