Francis Peyton Rous AutographAutograph note signed, one page, 4 x 3,5 inch, `The Rockefeller Institute` stationery, (New York), 13. 05. 1966, to an unnamed correspondent concerning an autograph request, written and signed in dark ink "Your request has given pleasure to Peyton Rous May 13, 1966", attractively mounted (removable) for fine display with a photograph, shows Francis Peyton Rous as virologist (altogether 8,25 x 11,75 inch), in very fine condition.