Chordeiles henryi, Cassin.
This image was included in: Reports of Explorations and Surveys .... Volume
X. 1859. Plate XVII. P. 16 of U. S. Pacific Railroad Explorations and Surveys
38th,39th, 41st Parallels. Call Number F593 .U58 1855 .
Image ID: libr0168, Treasures of the NOAA Library Collection Location: Western United States Photographer: Archival Photograph by Mr. Sean Linehan, NOS, NGS