“Details of the Library of the Congress U. S. in the N. Wing of the Capitol Washington,” by B. Henry Latrobe, ca. 1808-1816
Latrobe was the first Capitol architect to use working drawings to show workmen how his designs should be built. This drawing illustrates construction details of the upper gallery of his Egyptian-styled Library of Congress in the north wing. Due to funding delays, the Fire of 1814, and later design changes, however, the Egyptian library was never built.
Prints and Photographs Division, Library of Congress