![Decrease in population by color 1920-1930 : [District of Columbia]](https://tile.loc.gov/image-services/iiif/service:gmd:gmd385:g3851:g3851e:ct004581/full/!1200,1200/0/default.jpg)
Library of Congress — Maps
Decrease in population by color 1920-1930 : [District of Columbia]
united states. national capital park and planning commission
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