Capo it up to the 6th fret, to play along with the record (Ian & Sylvia's "Four Strong Winds" album)
Intro:
/ C /G7 C/ (x4)
/ C / C / G / G / G / G / G7 / C / G7/ C /
F G7 F G7
four rode by... rode through here
C G7 C
three Mclean boys and that wild Alex Hare
F G7 F G7
they were armed... all were armed
C G7 C
it was them; I'd have known them anywhere
C Em F C
oh, Willie Palmer's stallion was no twenty dollar cayuse
C Em F (G7) C
and when the wild bunch stole him, he high-tailed it into town
C Em F C
Ussher, in those days, was keeping order in the district
C Em F (G7) C
but, before he'd ridden thirty miles, the McLean boys shot him down
Playing it out of key of C formation makes the fast picking intro a bit easier. And the (G7) in the 2nd & 4th lines of the verses is optional. I like it; it echoes the quick G7 to C single strums in the back-up rhythm guitar during the first part of the intro.