Main Street Steps – Superior AZ
Date added: August 1, 2020; Modified: April 7, 2022
The Works Progress Administration (WPA) built steps and sidewalk on Main Street in Superior AZ. The sidewalk WPA stamps are undated.
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Boyce Thompson Arboretum – Superior AZ
Date added: August 11, 2012; Modified: February 8, 2015
“The Boyce Thompson Arboretum was established in 1923. Franklin Crider, a University of Arizona botanist, managed the research unit to study soil retention by plant roots. In 1933 a small group of Civilian Conservation Corps enrollees from camp F16A at… read more