THREADGILL CREEK. Threadgill Creek rises a mile west of Farm Road 783 in western Gillespie County (at 30°20' N, 99°14' W). Intermittent in its upper reaches, the stream runs northeast for twenty-four miles to its mouth, where it meets Squaw Creek to form Beaver Creek five miles southwest of Loyal Valley in southeastern Mason County (at 30°32' N, 99°05' W). Rising in the hills of the eastern Edwards Plateau, Threadgill Creek crosses an area characterized by flat to rolling terrain and deep to shallow loamy and clayey soils; vegetation consists primarily of open stands of live oak and Ashe juniper and grasses.
The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article."THREADGILL CREEK," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/rbt44), accessed May 31, 2013. Published by the Texas State Historical Association.