Lots of new advertisements added (been meaning to do that for quite the while).  As far as I know, this is all the 1956 Buick Advertisements that I possess.  Still searching for ones I don't have obviously, but I think I've got more than 95% of the ones that exist from back in the day.  I added some information about Fitz and Van as well, the artists behind most of the Buick advertising campaign back then.