I found a little item too late for the book, but it does stand out: On 10-13-1925 on radio station KFO in Los Angeles, Vernon Dent is listed as a "soloist," performing at 7 p.m. Then if you stayed tune; on the same station at 10 pm was "The Packard Ballard Hour" and featured Bud Jamison singing. This was a lucky find; no telling how many times Vernon and Bud were on the radio singing.