Lewis E. Walker, 1822 - 1880
License, verbatimCC0
The Smithsonian Institution: Open Access image dedicated to the public domain under Creative Commons Zero (CC0); usage.access=CC0 on the media record itself.
Lewis E. Walker, 1822 - 1880. Interior View of the North Hall, United States Patent Office Model Room After the Fire of September 24th, 1877, 1877. Smithsonian Institution.