Category:The Bell System Technical Journal, 1952

Media in category "The Bell System Technical Journal, 1952"

The following 9 files are in this category, out of 9 total.

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  NANPs(Ohio)1952.jpg 320 × 320; 37 KB
  
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  The Bell System technical journal (1922) (14570385937).jpg 3,354 × 1,824; 982 KB
  
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  The Bell System technical journal (1922) (14570390377).jpg 1,936 × 3,038; 940 KB
  
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  The Bell System technical journal (1922) (14753712651).jpg 2,928 × 1,868; 805 KB
  
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  The Bell System technical journal (1922) (14754425054).jpg 2,042 × 2,864; 853 KB
  
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  The Bell System technical journal (1922) (14756828075).jpg 1,852 × 3,044; 1,020 KB
  
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  The Bell System technical journal (1922) (14776648413).jpg 2,010 × 3,134; 958 KB
  
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  The Bell System technical journal 1952 - Area code map of Eastern USA.jpg 1,520 × 3,122; 614 KB
  
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  The Bell System technical journal 1952 Area Code map of USA.jpg 2,820 × 1,542; 645 KB