I have a photocopy of the sheet music, "In the Bright Mohawk Valley" (1896).
Except for punctuation, capitalization, and a couple of other things mentioned below, the text given above by GUEST,Dale -- Date: 12 Feb 04 - 12:12 PM -- is the same as that in the original sheet music for "Mohawk Valley."
The other things:
(1) The "stanza" beginning "For the sake of the Past" is, in fact, the chorus in the sheet music. The chorus comes after the second and fourth stanzas.
(2) In the stanza beginning "Do you thing of the valley you're leaving?" the third line is "Have you thought of the heart, so lonely," instead of "Have you thought of the true heart so lonely" ("true" is a later addition that does not appear in the original).