The earlier song was the 'Banks' one. Apparently this is a folk song written by Joe Glazer.

From The New York Times:

Unions Must Once Again Go On to Organize; The Marble Mill

Published: September 22, 1992

To the Editor:

"The Mills Weren't Made of Marble" (editorial, Sept. 7), your Labor Day commentary on the Lowell National Historical Park, which has recycled a mill into a museum, portrays the harsh lives of textile workers in the 1800's. "These mills," you write, "were not, like those in the old folk song, made out of marble nor the machines made out of gold."

I wrote "The Mill Was Made of Marble," a song about the dream of a textile worker, in 1947, when I was on the staff of the C.I.O. Textile Workers Union, so it is not as old as you imply.

In the normal course of events a song is not considered a folk song until the composer has been long gone from this earth and the song, as the professional scholars say, enters tradition. This is the ultimate gift a people can give a creative artist. So I thank you for characterizing my song as an "old folk song." It is a nice Labor Day present. JOE GLAZER Chevy Chase, Md., Sept. 7, 1992