«WOLF (AM)». FCCInfo. Cavell, Mertz & Associates, Inc. 16 de octubre de 2007. Using NAD83 coordinates instead of FCC standard NAD27 because NAD83 is closer to WGS-84.
Christiano, Bob (24 de diciembre de 2006). «"Historical Look at WOLF 1490: The WOLF Story"». The WOLF 1490 Tribute Site. pp. Part 2. «Listeners' Network ... bought WOLF in January 1981 from Deer River Broadcasting. In July of last year, WOLF switched from Top 40 to country and western format.»
