erc: who: (:unav) unavailable what: [Letter from Don Baker to Ron Najman] when: 19860124 where: https://digital.library.unt.edu/ark:/67531/metadc947873/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/