The MCSA was chartered in June 1898 to build a line from Moscow to San Augustine, Texas by way of Camden, primarily to move products from a new W.T. Carter & Brother Lumber Company sawmill in Camden to the Houston East & West Texas Railway main line in Moscow. The lumber company’s owners provided the financing and owned most of the new railroad’s stock. The line from Moscow to Camden was completed on November 19, 1898 and was never extended to San Augustine.