well - I've found it - and here it is in ABC format.

I can probably send you a jpg picture of the music if you have a current e-mail . Is the one above right?

X:1
T:COME OUT YE BLACK AND TANS
I:abc2nwc
M:4/4
L:1/8
K:C
z6e/2g|a2a/2 a/2 b3/2 a2ge|dd d/2e3/2 G2eg|aa ab a/2 g3/2 eg|
a3g e2(e^f)|g3/2g/2 g/2 a3/2 g2^fe|dd de G2AB|cB A A ed cB|A4A2
"^chorus:"eg|a2a a/2 a/2 b a ge|dd d/2e3/2 G2eg|aa ab a/2 g3/2 eg|
(a3g) e2e^f|g3/2g/2 ga g2^fe|dd de G2AB|cB A A ed cB|A4A3
w:I was born on~a Dub-lin street where the Roy-al drums do beat And the lov-ing En-glish feet they tramped all o-ver us, And_ each and ev-'ry night when me fath-er'd come home tight He'd in-vite the neigh-bors out-side with this chor-us: Oh, come out you black and tans,Come out and fight me like a man Show your wife how you won med-als down in Flan_-ders Tell them how the I R A Made you run like hell a-way, From the green and love-ly lanes in Kil-la-shan-dra.