Post Oak Cemetery, the only physical remnant of the Post Oak community, began as the burial ground for the family of Isham McMillin, who acquired land in this part of Bell County in 1855. The oldest marked grave, that of McMillin’s daughter Elizabeth, dates from 1857, though several graves marked by piles of stones or illegible markers may predate her burial. A large proportion of the graves are those of infants and children, reflecting the harshness of frontier life as Anglo settlers moved into the area. Members of a number of pioneer families are buried here, including the Edwards, Fulton, Sinclair, and Ezell families. Isham McMillin, who died in 1861, is buried here, as is another McMillin daughter, Mary, who lived from 1852 to 1864. In 1873, Sarah McMillin sold two acres of land to the deacons of Mountain Home Baptist Church for the purpose of building a church and schoolhouse. Mountain Home church came to be called Post Oak Baptist Church, and the school and community took the Post Oak name as well. The school consolidated with the Center Lake School District in 1916 and later became part of the Holland public school system. Post Oak Baptist Church continued to meet until a 1952 fire destroyed the church building and the congregation disbanded. Burials continued in the graveyard, and the Post Oak Cemetery Association, organized in 1951, cares for the cemetery as a reminder of early Bell County settlement.