How to order the first-day-of-issue postmark

Customers have 60 days to obtain the first-day-of-issue postmark by mail. They may purchase new stamps at their local Post Office, at The Postal Store website at www.usps.com/shop, or by calling 800-STAMP-24. They should affix the stamps to envelopes of their choice, address the envelopes to themselves or others, and place them in a larger envelope addressed to:

Gulf Coast Lighthouses Stamps
Postmaster
135 Main Street
Biloxi, MS 39530-9998

After applying the first-day-of issue postmark, the Postal Service will return the envelopes through the mail. There is no charge for the postmark. All orders must be postmarked by Sept. 24, 2009.

Source: U.S. Postal Service