Periodical postage is paid at Hagerstown, MD, and at additional mailing offices.
Change of address notices, including both the old and new addresses of the subscriber and the mailing label, should be sent at least one month in advance. Orders will be billed at individual rate until proof of status is received. Prices are subject to change without notice. Current prices are in effect for back volumes and back issues. Single issues, both current and back, exist in limited quantities and are offered for sale subject to availability.