anachronism on "Mad Men"?

[Laurence Horn]

This well-received AMC series about the advertising business is set
in the early 1960s, which is the primary point--it's big on
verisimilitude and does a nice job in general.  The episode before
last (which I just watched on tape) contained the phrase "no biggie".
As far as I can tell (with the help of HDAS), "no biggie" doesn't
date back before 1978 or so.  It seemed wrong to me when I heard it,
so I suspect it really was a lapse on the writers' part.

LH

------------------------------------------------------------
The American Dialect Society - http://www.americandialect.org