33.49″N 77°1′14.17″W﻿ / ﻿38.8926361°N 77.0206028°W</td>
<td>Limestone</td>
<td>2 pieces, each: 15 × 17 × 7 ft.</td>
<td>General Services Administration</td>
</tr>
<tr>
<td>Americans at Work, Past and Present</td>
<td>Various Artists</td>
<td>1938</td>
<td>Federal Trade Commission Building 38°53′32.67″N 77°1′14.94″W﻿ / ﻿38.8924083°N 77.0208167°W</td>
<td>Limestone</td>
<td>6¾ × 12½ ft.</td>
<td>General Services Administration</td>
</tr>
<tr>
<td>Primitive Means of the Tran