Stumbled across this after the work database went down tonight (at its scheduled time to do so)...The Nashua Telegraph wasn't a great paper, but it was available for my folks' perusal at breakfast, which The Boston Globe might not be, and the Manchester Union-Leader was beserkly right-wing (as rabidly so as any daily in the U.S. at the time), even as they were mildly left-leaning...somewhat to the left of the Globe, much less the Telegraph. The Loeb paper was out of the question.
I note that in the summer of 1977, I would've been catching either the CBS sitcom repeats or, at least as likely, what WENH, the New Hapmshire PBS station, was pumping out on that Saturday night: The International Animation Festival at 8p, Wodehouse Playhouse at 8:30p, The Goodies at 9p (I might well've opted for All in the Family's repeat, as I was rather less a fan of The Goodies), Python at 9:30p. I don't remember catching Casqe d'Or on what Channel 11 labeled PBS Theater that night, though I was a loyal viewer of the film package. (And I haven't thought of Once Upon a Classic nor Piccadilly Circus, both PBS offers, for dogs' years...)
Interesting to see how much more programming aimed at minority communities was in evidence even on the commercial stations in Boston at the time than one might see now, even if it was mostly low-budget discussion programming in fringe time-periods, on the weekend...but, then, WHDH had lost a license to broadcast only a few years before in a challenge, and I suspect the corporate interests in the Hub were making damned sure they covered at least a few bases to keep it from happening to them as well...