Bandera br/Bandera County, Texas br/29 43.581' N 99 04.123' W br/285 Highway 16th South. br/br/Text: This home was constructed in the 1870s by Georgia stonemason James Henry White for Charles F. Schmidtke (1839-1884). A native of Germany, Schmidtke was an early Bandera merchant, grist miller, and lumber mill operator. White's grandson J. Calvin Callahan (d. 1958), the owner of a feed store and poultry business, purchased the property in 1927. The limestone house, with influences of Greek Revival styling, remained in the Callahan family until the 1970s.