KQV's rep agency Adam Young placed ads in Broadcasting Magazine
The first ad appeared on March 17, 1958

(click on the ad for a larger view)
Less than 1 year after the format switch to Top 40, KQV's ratings began to climb.
KQV's rep firm, Adam Young Inc. placed ads in Broadcast Magazine.
(Click on the pictures below for the full ads)

Broadcast Magazine August 11, 1958

Broadcast Magazine September 1, 1958