'Get Out Ye Black and Tans' was also recorded by the Wolfe Tones on 'Live-Alive O' (1980). It was, incidentally, written (or claimed, at any rate) by Dominic Behan.
The Spinners recorded 'The Old Dun Cow' on 'Not Quite Folk' back in 1969, but that probably isn't available any more. BTW, can anyone tell me a little more about the song. The author's name is given as 'Wincott', and it seems to be Irish, but how old is it? It sounds like music hall to me.
On the subject of rebel songs. Years ago I found an album called 'Songs of Civil Rights' by Owen McDonagh and The Bogside Men (never heard of them before or since!). It had no date, no information, but it tells the story of the early days of the 'Troubles' which, thankfully, now seem to be coming to an end. I worked out that it must have come out c. 1971. Any further information - authors of songs, etc - would be gratefully received. - Susanne