54 photos
2 photos in 1 sub-album
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Key Systems
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2013 visit
4 photos
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8-2011
24 photos
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Western Electric #3 crossbar
14 photos
Western Electric #3 crossbar Switch
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Phil's combined C.O.
34 photos
Basic C.O. Photos
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North Electric C X 100
17 photos
North Electric C X 100
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Payphones
13 photos
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Phone Disp room #1
29 photos
Display room #1 Singleline phones
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Stomberg-Carlson X-Y
18 photos
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Strowger Step-by-Step
61 photos
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Toll and Switchboards
33 photos
Toll System Equipment