Barney Google watch

The comic strip is still officially called Barney Google and Snuffy Smith despite Barney not having made an appearance since the mid-1950's. The Houston Chronicle files it under "S" for Snuffy Smith but right clicking to save the image yields the filename, BarneyGoogle.gif. King Features Syndicate lists it in the A-B section of their comics listing between Baby Blues and Beetle Bailey.

I wanted to start a Barney Google watch like the Mary Worth watch but I cannot find an exact date for Barney's last appearance. This is just the sort of information that should be readily available on the Internet.