I'm asking for help in proving that my g-g-grandfather, William Adam Strohl I, served in the Civil War. The info that I have says that he lived in Logan Hocking County, enlisted in Pickaway County, served as a Private in the 58th Ohio Infantry, Company D. He was mustered out at Vicksburg, Mississippi. I've read somewhere that he served from Feb. 1, 1865 to Sept.16, 1865. His brothers John & Joseph also served in the 58th Infantry. I'm trying to get documentation to get him a Civil War headstone for his grave. He died in Piatt County,IL & is buried in the Monticello, IL township cemetery. Is there local info on him or is there a state archive that would have this info?