Peter C. Cavanaugh enjoyed a fifty-eight percent total audience share at the age of 16 in 1957 on his hometown radio station, WNDR-AM, in Syracuse, New York. Cavanaugh later wrote "Local DJ", an interwoven narrative on Rock 'n Roll culture from the late '50's through present times, now optioned as a film project by Kathleen Glynn and Blue Lake Entertainment. Cavanaugh produced and promoted hundreds of early concerts with the such acts as AC/DC, The Rolling Stones, Jimi Hendrix, The Who, Bob Seger, Ted Nugent, Alice Cooper, KISS and so on, as well as running a seven station radio group which included the top-rated Rock 'n Roll stations in America. Cavanaugh introduced the world to a young Michael Moore in Flint, Michigan, on WTAC-AM and WWCK-FM with "Radio Free Flint" from 1979 through 1985. After increasing annual sales revenue for Comcast Advertising in Michigan by 45% in a single year (2002 vs. 2001), Peter Cavanaugh founded Cavanaugh Communications, offering premium consultancy services from Oakhurst, California, near the entrance to Yosemite National Park.