The Birdman of Alcatraz. ALS signed ' As ever, Bob, Robert Stroud number 594,' one page both sides, 8 x 10.25, March 15, 1948. In part: '...About sex linkage. I find no difference in the chart you sent and the outline I gave you, but one statement by Hornell I will have to challenge. Dunker and Jill had nothing to do with the discovering that male birds have two sex chromosome. I knew it many years before they worked with the inheritance of color in bird.' Stroud's signature also appears in the return address area of verso. In fine condition. RRAuction COA.
