Sulphur Springs [Hillsborough County]. Sheet 4540 III SW. First Edition � Topographical Map Army Map Service, U. S. Army, Washington, D.C. 2. Note location of "Henderson � Hillsborough International Airport�
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Sulphur Springs [Hillsborough County]. Sheet 4540 III SW. First Edition � Topographical Map Army Map Service, U. S. Army, Washington, D.C. 2. Note location of "Henderson � Hillsborough International Airport�
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