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Home Texas Hays County San Marcos Thompson's Island Homeplace

Thompson's Island Homeplace

  Texas Historical Markers
Conway and River Road, San Marcos, TX, USA

Latitude & Longitude: 29° 52' 17.62380000012", -91° 55' 40.57132000008"
    Texas State
Historical Marker
     Dr. William Alexander Thompson (1803-1879) made an agreement with neighbors in 1850 to use the San Marcos River for irrigation and as a source of energy. He and his sons William A. and James used slave labor to build a gristmill, sawmill and cotton gin. The land masses formed by digging a ditch for the waterwheel and a sluiceway from the river were called Thompson Islands. The Thompsons directed the business until 1911 when John Matthew Cape (1861-1933) bought the mill. The use of electricity in 1942 ended the mill's need for water power.

This page last updated: 7/15/2008

Thompson's Island Homeplace Historical Marker Location Map, San Marcos, Texas