Here's three versions, all closely related and set to the same melody:

Tenneva Ramblers, "If I Die a Railroad Man," Victor 21406, rec 18 February 1928:

Railroad is finished, cars on the track
Take my girl to Cuby, and'll never bring her back.

chorus:
Fare you well, my darling, fare you well, my dear
Fare you well, my darling, I hate to leave you here.

See the engine coming, coming around the bend,
Puffing and a whistling, with a load of soldier men.

chorus

If I die a railroad man, bury me beneath the tie,
So I can hear old Number 9 as she goes rolling by.

chorus

When I go to Germany, I'll hear the cannons roar
Fare you well, my darling, I'll think of you no more

chorus

Now I'm goin' to Germany, I won't be back till fall
And if I see the Kaiser, I won't be back at all

chorus

[nb, this is from the track issued on 78 RPM; the "Railroad in Folksong" LP cut was an unissued take)

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Green Bailey's version, "If I Die a Railroad Man," on Gennett 6732 (recorded 1 December 1928), is very similar but missing all the "Germany/Kaiser" language

Railroad is finished, cars on the track
Take my girl to Texas, I'll never bring her back.

chorus
Fare you well, my darling, fare you well, my dear
Fare you well, my darling, I hate to leave you here.

I see the train a-coming, coming around the bend
Puffing and a whistling, with a load of railroad men.

chorus

If I die a railroad man, bury me under the tie
So I can hear old Number 9 as she goes rolling by.

chorus

When I ride old Number 9, I'll hear the whistle blow
Fare you well, my darling, I'll think of you no more.

chorus

When I go to Texas, I won't be back till fall,
And should I wreck old Number 9, I won't be back at all.

chorus

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And for good measure, Dock Boggs' "Cuba," recorded 26 July 1966 and released on his 3rd Folkways LP; reissued on "Dock Boggs: His Folkways Years" (2 CD-set).

Take me over to Cuby, I'll cross the waters o'er
Take me away to Cuby, you'll never see me more.

I go to Cuby, I'll cross the waters wide
I go to Cuby, I'll marry me another bride.

Railroad is finished, cars on the track,
Take me away to Cuby, they'll never bring me back.

Engineer blows the whistle, fireman rings the bell,
Brakeman takes the ticket, conductor's drunk as [blank].