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The Hot Polar Bears* / Fallout ash in the North left a bear / With a few sperm alive and to spare, / But when he met a she / And they made number three / The cub froze-- 'twas deficient for hair. / *Study made under the auspices of the International…

Sent from Edinburgh, Scotland.

Letter from Hermann's sister (David's Aunt). She discusses the bookmark that Hermann J. Muller made which is made on ribbon and in his collection here.