https://digitalprojects.rice.edu/wr...original/d9d5755fdfca4ed9bb73aa73e9e0232b.jpg
Yes it is Texas for sure. Was trying to find a picture of my GG grandfather from the war hoping to see a revolver he carried. He was an engineer from Switzerland and emigrated to Texas in the 1840’s. Went from Texas to California for the gold rush returned to Texas because of the war. Served as chief engineer for department of Texas for duration responsible for fortifications at Galveston and Sabine Pass and others. After the war ended went to Mexico working for Swiss engineering firm Jecker working on Veracruz to Mexico City rail line. In his memoirs wrote about he and a fellow engineer cleaning guns at night, one remaining loaded on guard while the other cleaned. You can look him up on the web. Getulius Kellersberger, Swiss engineer, civil war.