1942 Bell Telephone Labs Portable Information Center Master Index ES-800515 WWII

Original Bell Telephone Laboratories, Inc. Portable Information Center Master Index, drawing/publication number ES-800515, issued in March–April 1942.

This seven-page index identifies the technical folders and publications supplied with a portable communications information center. Listed subjects include telephone facilities, assembling and dismantling procedures, maintenance notes, terminal radio-frame operation, PBX specifications, packing instructions, tools and spare parts, a 5 KVA engine alternator, amplifiers, and handset descriptions.

This appears to be a scarce World War II-era Bell Labs communications document associated with a larger portable telephone and radio support system. The master index was intended to be bound at the front of the system’s complete group of technical folders.

Item Details

• Publisher: Bell Telephone Laboratories, Inc.
• Title: Portable Information Center—Master Index
• Publication/drawing number: ES-800515
• Drawing issues dated: March 9 and April 1, 1942
• Length: Seven pages indicated
• Format: Bound technical document in plain black pressboard cover
• Content: Index of telephone, radio, PBX, power-generation, maintenance and equipment folders
• Printed in the United States

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