Historical Marker Search

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historicalmarkerproject/markers/HM1QKS_flora-temple-mine_Yuma-AZ.html
This is the point of discovery for the Flora Temple Mine. In the early 1870's, a Colorado River steamboat captain named Isaac Polthamus purchased the Flora Temple Mine. This mine was the 2nd patented claim in Arizona (1871). Polthamus and his part…
historicalmarkerproject/markers/HMWZX_castle-dome-mining-district_Yuma-AZ.html
In 1863 Jacob Snively, founder of Gila City, and right hand to Sam Houston, avenger of the Alamo, following blazes left on the saguaros by Mexican and Conquistador predecessors, came to Castle Dome, and within 15 years, Castle Dome City's populati…
historicalmarkerproject/markers/HMJCL_italians-at-the-yuma-test-branch_Yuma-AZ.html
During World War II, the Yuma proving ground of the United States Army Corps of Engineers was known as the Yuma Test Branch, which was used as a floating-bridge test facility. By 1944, more allied troops support was needed to conduct the bridge te…
historicalmarkerproject/markers/HMJCK_world-war-ii-bridge-test-site_Yuma-AZ.html
In January 1943 the Yuma Test Branch of the Engineer Board of the Corps of Engineers commenced test operations on fixed and floating bridges at Imperial Dam. Tests were conducted in both sluiceways as well as above and below the dam. Transportatio…
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