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Figure 1. Location of the project area (USGS Washington West, D.C.-MD.-VA. 7.5 minute quadrangle, 1983)
Figure 2. Site plan with existing conditions (Hartman-Cox Architects 1998)
Figure 3. Native American groups living in the vicinity of Washington, D.C., ca. 1608 (after Potter 1993)
Figure 4. Village and quarry sites discovered by Holmes and Proudfit by 1889 (Proudfit 1889)
Figure 5. Numerous quarry sites were located in the northwest section of Washington, D.C. (Humphrey and Chambers 1985)
Figure 6. Andrew Ellicott’s plan based on the L’Enfant Plan (Hill 1792)
Figure 7. Detail of Atlas of Washington, D.C., showing extent of development in 1836 (shaded areas indicate buildings) (Tanner 1836 in Reps 199 1:79)
Figure 8. U.S. Patent Office, F Street Facade, between Seventh and Ninth Streets. Photo possibly taken from roof of Post Office (courtesy of Library of Congress, Prints and Photographs Division, Washington, D.C., Plumbe ca.1846)
Figure 9. Site plan of Patent Office Square prepared by W. Forsyth, June 30, 1854, indicating slope of site (Forsyth 1854, National Archives 81-1-6)
Figure 10. Proposed landscaping for East Wing, July 29, 1854. Geometric parterres are similar to layout created in courtyard (Robert Mills 1854; National Archives 81.1-57)
Figure 11. Earliest photo of courtyard illustrating geometric landscape plan (Titian Peale ca.1867; SI Archives Negative No. 75-495) 
Figure 12. Bird’s eye view of Washington, D.C., illustrating Patent Office Building and vicinity (Bachmann 1862 in Reps 1991:157)
Figure 13. Extent of fire destruction to North Wing (U.S. Patent Office 1877)
Figure 14. Extent of fire destruction to West Wing (U.S. Patent Office 1877)
Figure 15. First floor plan including courtyard plan (Patent Office Plan, N. Peters Photo­- Lithographers, post-1877; SI-OAHP, Box 6)
Figure 16. Map of project vicinity showing locations of previous archeological investigations (USGS 1983)