I found these lyrics in a couple of U.S. Girl Scout songbooks. The lyrics are just slightly different from what's in the Digital Tradition. Note that the Girl Scout version does not have the second chorus that's shown in the DT, and I really like that second chorus:

Barges, I would like to go with you
I would like to sail the ocean blue
Barges, on the river you may roam
On the river, always, you're at home

You'll find a link to the tune at the top of this page.
I'm still looking for source information on this song. The Girl Scouts say "source unknown."
-Joe Offer-

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BARGES
(Source Unknown)

Out of my window, looking in the night
I can see the barges' flickering light;
Silently flows the river to the sea
And the barges too go silently

CHORUS
Barges, I would like to go with you
I would like to sail the ocean blue
Barges, have you treasures in your hold?
Do you fight with pirates, brave and bold?

Out of my window, looking in the night
I can see the barges' flickering light;
Starboard shines green and port is glowing red
You can see them flickering far ahead.
CHORUS

Source: Sing Together: A Girl Scout Songbook, Third Edition, 1973, Girl Scouts of the U.S.A.
Exact same lyrics are in Chansons de Notre Chalet, Fifth Edition (1971), published by Cooperative Recreation Service, Inc., Delaware, Ohio.