Published in Asa Gray correspondence. Senders Ca-Cl, in 1891, pages 1

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Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1

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Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1

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Published in Raptor Research, in 1986, in volume 20, issue 1, pages 42-43

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Published in The Auk, in 1917, in volume 34, pages 230-231

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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in 1888, pages 1

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in 1888, pages 1

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in 1888, pages 1

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in 1889, pages 1

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in 1889, pages 1

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in 1890, pages 1

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), pages 1

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Published in The Nautilus, in 1960, in volume 73, issue 4, pages 158-159

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Published in Rhodora, in 1972, in volume 74, issue 800, pages 525

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1890, pages 1

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1881, pages 1-2

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1888, pages 1-4

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Published in Madroño, in 1938, in volume 4, issue 6, pages 171-176

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1890, pages 1

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in 1884, pages 1-3

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in 1885, pages 1-2

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in 1887, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1

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Published in Asa Gray correspondence. Senders A, in 1889, pages 1

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Published in The Auk, in 1910, in volume 27, pages 459-460

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1881, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1889, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1878, pages 1

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Published in Asa Gray correspondence. Senders B-Ba, in 1877, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1883, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1883, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1884, pages 1

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Published in Asa Gray correspondence. Senders B-Ba, in 1888, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1888, pages 1

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