Record Shops and Radio - 1940s-1960s
Here's an article from Houston History Magazine. The Jive Hive was before my time but anyone who was around in the 60s through the 90s will remember The Record Rack on Shepherd at Alabama.
The article includes lots of quotes from Paul Berlin, who had a record store of his own, on the relation between record shops and radio.
For those interested in more recent history, here's an article from the Press in 2002 about the end of the Record Rack.