erc:
who: Tucker, Argyle W.
what: Calculating Device.
when: 18851124
where: https://texashistory.unt.edu/ark:/67531/metapth171141/
erc-support:
who: University of North Texas Libraries
what: Permanent: Stable Content:
when: 20081203
where: https://texashistory.unt.edu/ark:/67531/