ENCYCLOPEDIA OF BLACK RADIO IN THE US 1921-1955

I've been made aware of a new hardback book Encyclopedia of Black Radio in the United States, 1921-1955 by Ryan Ellett.

This seems pricey at $95, and the subtext of the publisher's blurb may be that much of the book is just profiles of people like Nat King Cole, but on the other hand it may be of real interest, and yield important new info, about pre-war black radio (a subject only touched on, and then mostly re Atlanta, in Hand Me My Travelin' Shoes).