1. Historical maps of land use in Puerto Rico in 1951
			
			
			- Author(s):
 - Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
 
2. Holyoke and Chelsea, MA urban tree canopy cover data, 1952-2014
			
			
			- Author(s):
 - Healy, Marc; Rogan, John; Roman, Lara A.; Nix, Sabine; Martin, Deborah G.; Geron, Nicholas
 
3. Residential housing segregation and urban tree canopy in 37 US Cities; data in support of Locke et al 2020 in npj Urban Sustainability
			
				
			
			- Author(s):
 - Locke, Dexter H.
 
4. Witness trees of the Monongahela National Forest: 1752-1899
			
			
			- Author(s):
 - Thomas-Van Gundy, Melissa A.; Strager, Michael P.
 
	U.S. Department of Agriculture