ALS signed “Robert Stroud 594,” one page, lightly-lined both sides, 8 x 10.25, Alcatraz, December 27, 1950. Letter to Fred E. Daw. In part: “Concerning the Flamingo breeding, this is simply double-buffing. And anyone who wants a explanation of yellow, buff, and the effects of double-yellowing or double-buffing can find that subject discussed…The yellow genes and the red genes occur together…like this [genetic diagram] just like a string of pearls. But the strings can get tangled like this [genetic diagram] and when they split they may occur like this [genetic diagram]…When you get that split with two red genes and no yellow gene in a bird, you will have a pure red bird.” Intersecting folds, some brushes to writing, and a rusty paperclip mark to the top, otherwise fine condition. Pre-certified PSA/DNA and RR Auction COA.
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