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TitleDateType
1 Mountain States Telephone and Telegraph Company, Information Board1912-11-16Image
2 Mountain States Telephone and Telegraph Company, Switch Board1912-11-16Image
3 Mountain States Telephone and Telegraph Company, Test Board1912-11-16Image
4 Mountain States Telephone and Telegraph Company, Training Board1912-11-16Image
5 Mountain States Telephone and Telegraph, Toll Board1912-11-16Image
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