erc: who: Sanborn Map Company what: Dallas 1899 Sheet 36 when: 1899 where: https://texashistory.unt.edu/ark:/67531/metapth548819/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://texashistory.unt.edu/ark:/67531/