6 Pessoas ligadas a concrete
AP
Asa Perry
1827–1863·Montgomery County, Alabama
TR
Thomas Reader
1848–1916·Coffee County, Alabama, United States
EG
Edgar Guthrie
1867–1935·Lavaca County, Texas, United States of America
MS
Mary Switzer
1869–1964·Concrete, Texas
JS
Jacob Switzer
1872–1943·Concrete, Texas
Adolph Barth
1908–1970·Concrete, DeWitt County, Texas, United States