* Seven Sisters Oil Field, in Duval County
* Sevenmile Windmill, in Zavala County
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Seven Sisters Oil Field is an Oilfield in the state of Texas (county
of Duval), located at latitude - longitude coordinates (also known as
lat-long or GPS coordinates) of
follow-up program was initiated over the Seven Sisters oil field in
northern Duval County. Surface reconnaissance along San Jose Creek
revealed chipped stone debris adjacent to and within the present
streambed.