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Telephone Switchboards
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Belle Plaine Telephone Office, Belle Plaine, Minnesota
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Duluth Control Center, Duluth, Minnesota
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Mankato Citizens Telephone Company Installation, Mankato, Minnesota
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Mankato Citizens Telephone Company Installation, Mankato, Minnesota
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Mankato Citizens Telephone Company Switchboard, Mankato, Minnesota
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New Sweden Telephone Exchange in New Sweden, Minnesota
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St. Mary's Hospital switchboard, Duluth, Minnesota
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Switchboard operators at the Rochester Telephone Company, Rochester, Minnesota
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Telephone office, Princeton, Minnesota
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Telephone switchboard, Mankato, Minnesota
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Telephone switchboard, Princeton, Minnesota
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