As you can see from the publisher's response below, the December 24th
(v.78:51) issue of Advertising Age was not published.

===============================
Hello Mr. Maravetz,

Advertising Age did not publish a December 24th issue.  The issue number
was misprinted on the issues.

LaTonya
Subscriber Services
Crain Communications, Inc.

  >>> Bill Maravetz <william.maravetz@uni.edu> 1/24/2008 1:46 PM >>>
Hello:

I am writing from the Rod Library at the University of Northern Iowa
regarding the publication Advertising Age. We did not receive a Dec. 24,
2007 (v.78 no.51) issue. The numbering on the Dec. 17, 2007 issue was
v.78:50, and the numbering on the Dec. 31, 2007 issue was v.78:52. Was
or will a Dec. 24, 2007 (v.78 no.51) issue be published? Or was issue
v.78 no.51 skipped? Any information you can provide would be greatly
appreciated.

Thank you for your time and assistance.
--
Bill Maravetz
Technical Services Dept./Rod Library
University of Northern Iowa
1227 W. 27th Street
Cedar Falls, IA 50613-3675

Ph: 319-273-2339
Fax: 319-273-2870