In modern blues circles, Selwyn Birchwood is considered a youthful redeemer. As a teenager, the Orlando native received his initial training on the road with Texas-born lap-steel master Sonny Rhodes.
Odds are, anyone reading this column may be unfamiliar with Edward L. Cahn, a prolific filmmaker whose career spanned more than 40 years, from 1917 until his death at age 64 in 1963, his last movie …