cover Fort Sumter, allegorical scene of the shelling of Fort Sumter, Liberty and Flag with 'Sumter First - Peace Afterwards' motto below (Walcott #763) in red and blue on very fresh patriotic cover to Pa., franked with 3c Dull Red (26), blue grid cancel (not tied), matching 'Elyria O. Aug 14, 1861' c.d.s., very fine, attractive