Cadastral map showing lot and block numbers and dimensions. Relief shown by contours and spot heights. Blueprint. LC copy annotated in pencil. Available also through the Library of Congress Web site as a raster image. DCP
Kay, Edgar
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/89692739/">https://www.loc.gov/item/89692739/</a>