Vintage matte-finish 6 x 8 photo of William Mayo, signed in the lower border in fountain pen, “Very truly yours, W. J. Mayo”; and a vintage matte-finish 3.75 x 5.75 photo of Charles Mayo, affixed to a 4.75 x 7.5 mount, signed on the mount in fountain pen, “Yours truly, C. H. Mayo.” Both photos are matted and framed together with a biographical plaque to an overall size of 18 x 18.75. In fine condition, with some slight silvering to edges of William’s photo. RR Auction COA.