File AT & T-Buildings Box 1, Folder 22 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File AT & T-Michigan employees Box 1, Folder 23 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File AT & T-Miscellaneous Box 1, Folder 24 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File AT & T-Stockholders meeting Box 1, Folder 25 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File Audio-visual equipment Box 1, Folder 26 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File Auditors Box 1, Folder 27 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File Automatic call distributor Box 1, Folder 28 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File Automatic Message Accounting Box 1, Folder 29 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File Automotive industry Box 1, Folder 30 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches
File Awards 3 folders Box 1, Folder 31-33 In: Michigan Bell Telephone Company Photographs, 1949-1983 » Positive Photographic Prints » Accidents - Concentrator switches