Don Barrett’s old website LA Radio People, provides this info:
ANDERSON, Paul Oscar: KRLA, 1970-71; KROQ, 1972. Paul had one of those booming news voices at popular music stations in the late 1960s and early 1970s – KHJ, 1110/KRLA and KROQ. His voice has been stilled. Paul died June 5, 2009, following a long battle with heart failure and cancer. He was 77.
Paul’s career took him to major radio jobs in Chicago and New York. In 1971 he received the LA Times Award for “Best Documentary of the Year” for his project “Fifth and Main, Los Angeles.” Paul was born in Knoxville, graduating from Carson-Newman College in Jefferson City, Tennessee.
“I went into the military when I was 15 years old, finished high school when I got out of the Air Force at 18 and was married with a child,” he remembered during an interview with LARadio a few years ago. “I went to college when I had two kids and left Knoxville for the broadcasting wars in 1953. My first job was as ‘Dean’ of Midwestern Broadcasting School in Chicago.” His radio career started at KJFJ-Webster City, Iowa and then on to KWMT-Ft. Dodge, KOIL-Omaha, KISN-Portland, WIFE-Indianapolis, KIMN-Denver, WMAQ-Chicago, Monitor for NBC-New York, KCBQ-San Diego, and then Los Angeles. “I worked at 37 broadcasting facilities in a little over 35 years. I came home to Knoxville in 1974, just out of a drunk farm in Minnesota, married my childhood sweetheart on Valentine’s Day 1975. To everyone’s surprise, including mine, I have been totally clean and sober since leaving Hazelden Center in Minnesota after six weeks of treatment. Over many years, I have owned a couple of ad agencies and a marketing consulting firm. I also have published a couple of textbooks on marketing [The Handbook of 
Successful Marketing for the Professions] and done hundreds of seminars on the topic. I taught Marketing at the University of Tennessee. I retired from air work in 1993. I had been among the pioneers in the South to do a talk show, which I did for about ten years at a number of stations in Knoxville. At the same time, I was doing a highly controversial news commentary at several stations.” When interviewed recently he said his sole occupation/avocation those days was writing – for publication – and songs for his daughter who sings country soul and lives in Santa Rosa, California. “Unfortunately, that’s about all I can do – I suffer from heart failure, prostate cancer and diabetes. Except for the terminal illnesses, I feel pretty good. God, how I miss the mic.”
Unfortunately, Barrett’s information contains no dates on correspondence etc.
Barrett died in September 2023 at age 81.