Successive means devised for coast-to-coast communication in United States. July: Facilities for overland communication which antedated steam for land transportation and electricity for communication. Oct: Pioneer railroad projects; development of aviation; transcontinental air mails. Jan 1941: Place which transcontinental telephony holds in picture of communication. (See also - n 3 July 1940 p 197-210; Bell Telephone Mag v 20 n 1 Feb 1941 p 56-67)
Conquest of continent
Bell Telephone Quarterly
Bell Telephone Magazine ; 19 , n 4
1940
12 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1941
|Engineering Index Backfile | 1932
|GWLB - Gottfried Wilhelm Leibniz Bibliothek | 1680
Engineering Index Backfile | 1931
Engineering Index Backfile | 1935