Pen and ink and watercolor. Available also through the Library of Congress Web site as a raster image. On verso: No. 1. Copy annotated in blue, red, and green to show areas of research service, mounted on board.
Pen and ink and watercolor. Available also through the Library of Congress Web site as a raster image. In lower margin: No. 2. Copy annotated in blue, red, and green to show areas of research service, mounted on board.