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* [http://w140.com/tek_CalibrationFixtures_1980.pdf Tektronix Calibration Fixtures Catalog 1980 (PDF)] | * [http://w140.com/tek_CalibrationFixtures_1980.pdf Tektronix Calibration Fixtures Catalog 1980 (PDF)] | ||
==Tek History== | |||
* [http://w140.com/1958_tek_personnel.pdf 1958 Tek Personnel Photos] | |||
* [http://w140.com/1959_tek_photo_album.pdf 1959 Tek Personnel Photos] | |||
==Maintenance Issues== | ==Maintenance Issues== |