The beginnings of natural history in AmericaPublished in Proceedings of the Biological Society of Washington, in 1886, in volume 3, pages 35-105Additions to the flora of Washington and vicinity, from April 1, 1884 to April 1, 1886Published in Proceedings of The Biological Society of Washington, in 1886, in volume 3, pages 106-132
Additions to the flora of Washington and vicinity, from April 1, 1884 to April 1, 1886Published in Proceedings of The Biological Society of Washington, in 1886, in volume 3, pages 106-132