Sources for GreenTowns:

Library of Congress /Prints and Photographs Online Catalog /
"Greenbelt Communities" / Farm Security Administration, US Department of Agriculture / 1939
"Greenbelt Towns" / US Government Printing office / 1936
Maryland Department of Assessments and Taxation
"Prince George's County Historic Site Summary Sheet" / 1993
"To Make America Over; The Greenbelt Towns of the New Deal" / Julie D. Turner / Miami University term paper / 2010
"Historic American Buildings Survey: Old Greenbelt" / LaDale Curtis Winling and Sally Kress Tomkins / 2005
"A National Historic Landmark Nomination: Greendale Historic District"/ Linda McLelland / 2012
The Milwaukee Journal
The Milwaukee Sentinel
"Greenhills Commercial Corridor Study" / Hamilton County Development Company, Economic Development Office / 2007
"The Planning Theory of Greenhills" / Frederick E. Lutt / University of Cincinnati term paper / 2005