Can anyone identify the singer/songwriter I saw once, 30 years ago?

It was the summer of 1968. The hippies who had been in the Haight-Ashbury section of San Francisco the year before had moved to Boston, which made Boston Common the "happening" place to be. A singer-songwriter, who said that she was on the way back from a folk festival to her home in Massachusetts, stopped by the Common and sang some of her songs. These included

"George, The Peculiar Cat"

Geese and ducks are both unrulier
Pigs they are piggier, and mules are mulier
But no animal is more peculiar
Than George, the peculiar cat

"It's Then I Start Thinking Of You"

But sometimes, when I laugh at the monkeys
And seals that I see in the zoo
And there's no one to share in my laughter
It's then I start thinking of you

And "Pearsons Red Top Snuff"

Oh, a cobbler's pipe can steady your nerves when things are going rough
But I prefer a pinch of Pearson's Red Top Snuff
Instead of chewing and spitting vile tobacco juices
I prefer the snuff that's made in Massachusetts

(chorus)
Carefully scented with wintergreen
Makes your mouth feel fresh and clean
Stiffens your upper lip
Softens your lower lip
Not too much, but enough
You'll never get cancer of the lung
For it only touches your mouth and tongue
Pearson's Red Top Snuff

If you want to be sure the snuff you buy is Pearson's Red Top
Look for the snuff in the bright red can
On the front of the can is an old fashioned girl, I don't know who she is
Maybe she was an earlier day Pearson's fan

(repeat chorus)

Does any of this sound familiar to anyone? Does anyone know who this person was?