Ozanam's plane table and demi-circle. In: "Historical Account of the Plane
Table" by A. M. Harrison, 1875. This is a handwritten unpublished manuscript.
Library Call Number TA571 .H37 1875
Image ID: libr0042, Treasures of the NOAA Library Collection
Photographer: Archival Photograph by Mr. Sean Linehan, NOS, NGS
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