As regular readers will have noticed, I've received a great many scanned books by e-mail from Charles Leon, all very gratefully received (even the dino sex article). Animals of Yesterday, originally published in 1941 (with this edition arriving in 1966) is mostly a rather run-of-the-mill pre-Renaissance dinosaur book, stocked with the usual Zallingerian swamp beasts. All the same, it does present certain mysteries that I'd love for any readers familiar with museums in Milwaukee to clear up, and moreover it's a book from Charles' personal collection. I feel quite honoured!