- CollectionBUC - Businesses Collection
- Série organiqueTEC - Telephone Companies
- PièceIHM.2020.0187a - Indian Head Area Telephone Exchange Map (1975)
- PièceIHM.2020.0188 - Sunny South Rural Telephone Company Box
- PièceIHM.2020.0189 - Sunny South Rural Telephone Company Minute Book
- PièceIHM.2020.0190 - Albina Rural Telephone Company (Sintaluta) Minute Book
- PièceIHM.2020.0191 - Albina Rural Telephone Company (Sintaluta) Cash Book 1918 - 1971
- 16 en plus...