The Northwestern Bell Telephone Company operates in the states of Nebraska, Iowa, Minnesota, and North and South Dakota. In this territory it has been found most economical and satisfactory to use eastern white cedar poles. Some western red cedar poles, mainly in the larger sizes, have been placed in the plant when prices and certain construction demands made their use desirable. Practically all of the eastern white cedar poles are procured in Minnesota Wisconsin and Michigan. The western red cedar poles are 6btained from a number of the western states.
Henry, A. S.
"Preservation of Eastern White Cedar Poles,"
Ames Forester: Vol. 10
, Article 14.
Available at: https://lib.dr.iastate.edu/amesforester/vol10/iss1/14