I learned it a tad differently, from "Don Quixote" album and songbook. Pretty song, but I've never heard it done by anyone but Lightfoot.

ON SUSAN'S FLOOR - Gordon Lightfoot
Words and music by Shel Silverstein and Vincent Matthews
c. 1970 and 1972, Jack Music, Inc.

Like crippled ships that made it
Through a storm and finally reached a quiet shore,
The homeless found a home on Susan's floor.

Didn't feel so cold and tired
Stretched out before her fire
Rollin' smokes and drinkin' up her wine,
And I remember candlelight and singing 'til we could not sing no more,
Then fallin' warm asleep on Susan's floor.

Well, now that my song is sweeter,
I think I'd like to greet her
And thank her for the favors that she gave.
A stranger I came, my head bowed in the rain to the door,
I sat and sang my songs on Susan's floor.

In the mornin', I'd go on,
Buying kingdoms with my songs,
Knowin' I'd be back in just a while,
Warmin' in the sunlight of her smile.

INSTRUMENTAL BREAK (One stanza)

Well, lots of time and songs have passed,
I catch myself just looking back,
Reliving all the wonder of those nights.
That's where I'd be today, if I'd only stayed one night more,
And sang another song on Susan's floor.

Like crippled ships that made it
Through a storm and finally reached a quiet shore,
The homeless found a home on Susan's floor.