A. M. Rawn, "Chemical Treatment Featured at Arizona Sewage Meeting," Water Works and Sewerage, July 1937, pp. 277-278.

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"Plans Established to Build a Sewer," The SUN, Flagstaff, Arizona, Friday, October 31, 1969, p. 11 - original article from SUNfiles news archive, December 30, 1899.

Laura Fairbanks (Pima County Wastewater Management Dept.), "Sewer Collapse Causes Sinkholes in Tucson, Arizona, on September 7, 2002."

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