Mary is one of Kingston trios

(Peter, Paul & Mary). I can't find too much information about the background. Maybe other frinds here can tell us morer about the song. Sorry!

Here is what I found.

500 Miles (Bare-West-Williams) This well-known ballad about a man who is painfully far away from home became a folk staple through Peter, Paul and Mary's version on their No. I debut album, Peter, Paul and Mary (1962), and country-singer Bobby Bare's crossover Top 10 hit from 1963. In 1989, "500 Miles" was returned to the charts (No. 97) by The Hooters, a Philadelphia rock quintet, in an entirely new treatment. However, quieter renditions like The Kingston Trio's are closer to the true spirit of the song.

500 Miles
500 MILES Lyrics
Artist(Band):Peter, Paul & Mary

If you miss the train I'm on,
you will know that I am gone,
you can hear the whistle blow a hundred miles.
A hundred miles, a hundred miles,
a hundred miles, a hundred miles,
you can hear the whistle blow a hundred miles.
Lord, I'm one, Lord, I'm two, Lord,
I'm three, Lord, I'm four, Lord,
I'm five hundred miles a way from home.
Away from home, away from home,
away from home, away from home,
Lord, I'm five hundred miles away from home.

Not a shirt on my back,
not a penny to my name.
Lord, I can't go back home this-a way.
This-a way, this-a way,
this-a way, this-a way,
Lord, I can't go back home this-a way.

If you miss the train I'm on,
you will know that I am gone,
you can hear the whistle blow a hundred miles.
A hundred miles, a hundred miles,
a hundred miles, a hundred miles,
you can hear the whistle blow a hundred miles.