Pierson, William S The man who wouldn't quit D&F tower. RM rocky mountain Herald O 9, 1965 p.l President of KBPI, a tower squatter now will ring -the Daniels and Fisher tower bell. Cervi's Journal 0 5, 1966 p.3,5 Will sell KBPI. Post 0 6, 1969 p.27 Is trying to keep clock running in D & F tower. RMN N 21, 1970 p.5 Pierson joins news staff of KDSI. Summary of career. RM Journal S 3, 1975 p.34