Many of us have heard a radio announcer say “Send your name and address to …”  The below covers were sent to Winnipeg radio station CJOB in 1962 after hearing the announcer say something very similar.
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The above cover franked with a 4 cent Queen Elizabeth the Second cent covering the first class local letter rate.  I imagine that Christie’s Hamper is much like the current hampers that people pay towards all year to have a ‘hamper’ full of food at Christmas.  Perhaps they were giving a few away and a loyal listener wrote in hoping to win it.

Below are a couple of other covers complete with their contents sent in to Christie’s C/O CJOB.

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<div class="separator" style="clear: both; text-align: center;"></div>I believe the George referred to above is George McLoy who worked at the station from 1946 to 1987, an astonishing 41 years on the Air.  He hosted the Ladie’s Choice Program.

Saran Wrap had a contest on he station as well.  This is demonstrated in the below 2 covers
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Royal Upholsters had a contest as well:
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The final cover I have addressed to CJOB is for the Robin Hood Rocking Chair contest.
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CJOB was created by Jack Blick in 1945 to provide  JOBs for people returning from serving in World War II.

Sources:
http://cjobanniversary.com/yourStories.htm
http://www.broadcasting-history.ca/index3.html?url=http%3A//www.broadcasting-history.ca/listings_and_histories/radio/histories.php%3Fid%3D213%26historyID%3D74