- CollectionBUC - Businesses Collection
- Série organiqueTEC - Telephone Companies
- 16 en plus...
- PièceIHM.2020.0187b - Indian Head Area Telephone Exchange Map (1979)
- PièceIHM.2021.0424 - Ledger book for Wide Awake Rural Telephone Company
- PièceIHM.2021.0460 - Sunny South Telephone Company receipt book
- PièceIHM.2021.0461 - Northern Electric Company order book
- PièceIHM.2021.0463 - Sunny South Rural Telephone Company cheque book