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AT&T / Bell System network dimensions, 1891 to 1937

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yearBell-System share of U.S. phonesphones not connected to AT&T long distancephones / central officeU.S. telephone totalBell-licensed telephonesBell telephonesconnecting to AT&T long linescentral officesexchangesbranch officesSources and notes

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189190%167239,300216,0171,297788509AT&T Annual Reports, 1900-1937

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189289%172260,800552,720232,1401,351812539

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189389%168266,400566,491237,1861,409838571Bell-licensed telephones (instruments in the hands of Bell licensees, under rental") may be total telephones produced.

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189485%169285,400582,506243,4321,439867572

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189583%175339,500674,976281,6951,613927686Bell-licensed telephones are for Dec. 20 through 1902, subsequently for Dec. 30.

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189680%181404,300772,627325,2441,799967832Other telephone counts are for Jan. 1 of following year (before 1909), or for Dec. 31 (1909 and following years).

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189775%196515,200919,121384,2301,9621,025937

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189868%218680,8001,124,846465,1802,1341,1261,008U.S. total telephones from FCC compilation.

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189963%44%2611,004,7001,580,101632,946557,9792,4261,2391,187http://galbithink.org/telcos/telephones-1876-1981.xls

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190059%49%2891,355,9001,952,412800,880697,6742,7751,3481,427

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190157%3401,801,1002,525,6061,020,6473,0051,4111,594Figures for telephones connecting to AT&T long distance for 1899 and 1900 are Bell-System telephones.

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190254%3792,371,0443,150,3201,277,9833,3751,5141,861Connecting telephone figures for 1907 and subsequently are in non-Bell-System operating companies.

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190354%4082,808,9003,779,5171,525,1673,7401,6092,131

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190454%4413,353,2004,480,5641,799,6334,080The statistical category "central offices" replaced the statistical category "exchanges" in the 1910 annual report.

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190554%4954,126,9005,698,2582,241,3674,532

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190655%5584,932,8007,107,8362,727,2894,889Theodore N. Vail becomes president of AT&T in 1907, replacing Frederick P. Fish

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190750%37%5946,118,5783,035,533803,4675,108

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190850%33%6386,483,6003,215,2451,149,3845,04323

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190951%26%7226,995,7003,588,2471,554,4454,968

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191053%23%8177,635,4004,030,6681,852,0514,933

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191154%21%8928,348,7004,474,1712,158,4545,014

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191257%15%9568,729,5924,953,4472,502,6275,182

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191357%15%1,0329,542,5005,415,2092,717,8085,245

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191457%14%1,09010,046,4005,763,0082,885,9855,289

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191558%13%1,16110,523,5006,155,9002,995,3215,300

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191658%12%1,21311,241,4006,545,4903,301,7025,397

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191760%11%1,23911,716,5207,031,5303,444,1485,676

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191860%9%1,25412,077,6007,201,7573,790,5685,742

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191961%7%12,668,5007,739,1594,056,588

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192062%6%1,46213,411,4008,333,9794,267,9565,702

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192164%4%13,875,2008,914,1554,466,064

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192266%2%14,347,3959,514,8134,535,752

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192368%2%15,369,50010,406,1554,593,946

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192469%2%1,88116,208,90011,242,3184,664,2325,978

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192571%1%2,00016,935,90012,035,2244,685,0006,017

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192672%1%2,13717,746,20012,816,2524,758,0005,998

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192774%1%2,24518,522,76713,726,0564,639,4306,115

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192875%9%2,33419,341,30014,524,6483,147,0166,224

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192976%1%2,41020,233,00015,414,0054,682,8496,396

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193078%1%2,38120,201,60015,682,0594,416,0006,585

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193178%1%2,31619,707,60015,389,9944,210,0066,645

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193279%0%2,03517,424,40613,793,2293,706,7716,778

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193379%1%1,94616,710,90013,162,9053,437,0956,763

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193479%1%1,97616,968,80013,378,1033,421,8976,769

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193579%0%2,04017,424,00013,844,6633,505,3376,787

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193678%0%2,08818,433,00014,453,5523,906,4486,921

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193779%0%2,20819,453,40115,331,9834,048,0176,945