The Baltimore Post Office is issuing a commemorative postmark for this year's 131st Preakness Stakes on Saturday at Pimlico Race Course.
The postmark features an image of the 2006 Preakness logo. Envelopes with the image will be available at the track. The Post Office will open Preakness Station at the race course from 8:30 a.m. to 7 p.m. on the second floor of the grandstand. The postmark will be available free for any item with first-class postage.