Technical Archives

Access historical technical documents, manuals, and publications from Bell Labs and AT&T Long Lines.

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The Bell System Technical Journal (1922-1983)

Scientific papers and technical articles published by Bell Labs researchers.

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Transmission Systems for Communications (1964)

Comprehensive overview of transmission systems used in the Bell System.

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Microwave Tower Construction Specifications

Technical specifications for Long Lines microwave relay towers.

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L-Carrier System Technical Manuals

Operation and maintenance manuals for L-carrier coaxial cable systems.

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Note: These are placeholder links. The actual document files will need to be uploaded to the server. Please contact us if you have historical documents to contribute.