Can somebody do a quick check on Advertising Age?

December of 2007 goes from

v.78: no.48 (Dec 3)

v.78: no.49 (Dec 10)

v.78: no.50 (Dec 17)

v.78: no.52 (Dec 31)

I got word that Dec 24 was not published but yet the issue sequence has
skipped a beat. Can someone verify this please? This is why I love
serials work.

Roger