"The Progress of the Pioneer"
The Phoenix Federal Building and Post Office was designed by Phoenix architectural firm Lescher and Mahoney in the Spanish Colonial Revival style and constructed in 1936. In 1937 the U.S. Treasury’s Section of Fine Arts commissioned artist La Verne Nelson Black to create two murals for the east wing of the post office entitled ‘Historical Background’ and ‘Progress of the Pioneer.’ The murals present images of Anglo-American settlement and industrialization. Black moved with his family to Phoenix for health reasons and focused his painting and sculpture on the historic West and Native Americans. Another three murals funded by the Section were painted by Oscar Berninghaus. They hang in the post office in the west wing of the building. These paintings are entitled ‘Communication during the Period of Exploration,’ ‘Early Spanish Discover Pueblo Indian’ and ‘Pioneer Communication.’
"The New Deal in Arizona: Connections to Our Historic Landscape," University of Arizona, The New Deal in Arizona Chapter of the National New Deal Preservation Association. http://www.library.arizona.edu/newdeal/map.html Photos of the murals available at: http://content.library.arizona.edu/cdm/singleitem/collection/NewDeal/id/183