cover Free T. Pickering, autograph free frank as Sec. of State, P.M.G. and Member of Congress on 1797 folded letter headed 'Philadelphia Augt 12 1797' regarding 'loan' of six pound cannon to John Mix to serve as a model for properly mounting cannons owned by the State of Conn., clear 'Free' h.s. and bold '12 AV' Franklin mark, letter has additional 'Timothy Pickering' autograph signature, very fresh and clean cover, very fine and choice, ASCC $200.00 photo