Mailing Address:
Challenge Publications, Inc.
9509 Vassar Ave., Unit A
Chatsworth, CA 91311-0883

Business and editorial office:
Tel. (818) 700-6868
Fax (818) 700-6282
Monday through Thursday 8:00 a.m. to 4:00 p.m. PST
customerservice@challengeweb.com

Subscription office:
Tel. (800) 562-9182
Monday through Friday 9:00 a.m. to 4:00 p.m. PST