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File:Vintage Casey Kasem American Top 40 Radio Promotional Ceramic Cookie Jar, Autographed by Casey Kasem, Circa 1998 (7105872661).jpg - Wikimedia Commons
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50,000-watt KCBQ Top 40 Radio San Diego Music Survey 11-21-69 Lee "Babi" Simms for Sale - Fleetwoodmac.net
Pavek Museum - WLOL late 1950's Top 40 Radio Survey. Can you spot a very young Steve Cannon and Leigh Kamman? #twincities #radio #Top40 #vintage #radiohistory #minneapolis #electronic #communication #pavekmuseum Radiotapes #broadcasting | Facebook
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popsike.com - RADIO SHOW: ACC TOP 40 w/BOB KINGSLEY 4/21/90 KEITH WHITLEY,KENTUCKY HEADHUNTERS - auction details
![The Evolution of Technology: AM Radio -- Top 40 Lists | Evolution of Technology Series, Weekly Columns | Bruce Sallan The Evolution of Technology: AM Radio -- Top 40 Lists | Evolution of Technology Series, Weekly Columns | Bruce Sallan](http://www.brucesallan.com/wp-content/uploads/2013/03/KHJ-Boss-40-July-21-1965-with-Sonny-Cher-.png)