pdf California DNR Forestry - Telephone Handbook - 1947 Popular
By Paul F 356 downloads
CA_DNR_Forestry_Telephone_Handbook_1947_tci.pdf
237 pages. The purpose of this Handbook is to establish principles, standards and methods to be observed in the construction and maintenance of telephone systems on the National Forests. California Dept of Natural Resources. Based on info from the U.S. Forest Service (USFS). Includes switchboards and telephones such as the Portable Tel Model C and Model B Portable Tel.
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