"-63,549 people live within a 15 minute walk of an Arlington County middle school, -39,656 people live within a 10 minute walk of an Arlington County middle school, -30,537 people live within a 5 minute walk of an Arlington County Middle school. All information came from the Arlington County GIS Department." Made available through courtesy of Ryan Miller, Teacher, Arlington Public Schools. Also available in electronic format. Available also through the Library of Congress Web site as a raster image. "All information came from the Arlington County GIS Department." Map on synthetic sheet affixed to top of foam-rubber base. Includes density of population map, density of population chart, population map, and population chart.
Warnke, Natalie; Arlington County (Va.). Gis Mapping Center
2016
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/2016586858/">https://www.loc.gov/item/2016586858/</a>