Commodore in the US Navy (1780–1843) who commanded the USS Essex during the War of 1812 and is remembered for capturing the first British warship of the conflict, the HMS Alert. ADS, signed “D. Porter,” one page, 8 x 5, August 16, 1818. Financial document in Porter’s hand approving the payment of $50 to William Mebbit. Central horizontal and vertical folds, the horizontal fold slightly affecting the signature, and scattered cancellation cuts and marks, otherwise fine condition RRAuction COA.