Plates prepared between the years 1849 and 1859, to accompany a report on the forest trees of North America.
Contributors: Smithsonian Institution.
Series: Smithsonian Institution publication 800.
Publisher: Smithsonian Institution
Published: 1891
Place of publication: Washington
Language: eng
Number of pages: 23
Subjects: Trees -- North America
Notes: The above is only a fragment of the work projected by Dr. Gray, but not completed, and the plates bear the numbers intended for the original work.