Ogden Nash was finally commemorated on a US Postage stamp with the issuance of his philatelic image at the end of last August. Evidently, they're just becoming readily available now with the approach of National Poetry Month (April). Each year the American Academy of Poets has been lobbying to get a prominent poet honored on a postage stamp for Natinal Poetry Month, but the Ogden Nash stamp was released as a special issue to celebrate the 100 the Anniversary of his birth. Heres' the pic and story:

http://www.usps.com/news/2002/philatelic/sr02_043.htm

and about time too!