This section is from the book "Scientific American Reference Book. A Manual for the Office, Household and Shop", by Albert A. Hopkins, A. Russell Bond. Also available from Amazon: Scientific American Reference Book.
Data. | 1897. | 1900. | 1903. |
Exchanges | 967 | 1,239 | 1,514 |
Branch offices | 832 | 1,187 | 1,861 |
Miles of wire: | |||
On poles............................... | 286,632 | 509,036 | 1 1,109,017 |
On Buildings | 12,594 | 15,087 | |
Underground | 234,801 | 489,250 | 1,328,685 |
Submarine................................ | 2,818 | 3,404 | 6,048 |
Total miles of exchange service wire....................... | 536,845 | 1,016,777 | 2,443,750 |
Total circuits................................. | 264,645 | 422,620 | 742,654 |
Total employees | 14,425 | 25,741 | 50,350 |
Total subscribers.............................. | 325,244 | 632,946 | 1,277,983 |
Length of wire operated........................................................miles.... | 805,711 | 1,518,609 | 3,281,662 |
Instruments in hands of licensees under rental at beginning of year........................................................No........ | 772,627 | 1,580,101 | 3,150,320 |
Daily exchange connections.................................................."........ | 2,630,071 | 5,173,803 | 9,322,951 |
Average daily calls per subscriber........................................"........ | 8.3 | 8.2 | 7.3 |
Received in rentals of telephones..................................dollars.......... | 1,597,959 | 2,427,038 | |
Dividends paid stockholders.........................................."........... | 3,682,949 | 4,078,601 | |
Capital....................................................................".... .. | 89,100,500 | ||
Gross earnings..................................................................... " ........... | 5,130,845 | 9,534,499 | |
Net earnings.......................... " | 4,169,675 | 5,486,058 |
1 Information not collected separately.
 
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