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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1854, pages 1-2

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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1835, pages 1

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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1849, pages 1-2

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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1850, pages 1-3

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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1850, pages 1-3

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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1836, pages 1-2

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Published in The Auk, in 1903, in volume 20, pages 234-235

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Published in Rhodora, in 1908, in volume 10, issue 116, pages 146

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