Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 283
-was not excessive. The most notable success made in the handling of transfer sys-tems in the Eastern portion of the United States has been made bythe City Telephone Company of Grand Rapids, Mich. The system … 262 AMERICAN TELEPHONE PRACTICE. used in the exchange of this company is a modification of the Cook-Beach system, being shown in some detail in Fig. 224. It may be said that as applied to manual switch-boards the trans-fer system has been, and is being, gradually relegated to the past.
Telephone
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