I found an index for the songbook online at http://picclick.co.uk/The-Fureys-and-Davey-Arthur-Song-Book-252561235441.html#&gid=1&pid=4. No "Siege of a Nation," but here's the index:


THE FUREYS & DAVEY ARTHUR SONG BOOK - 26 Golden Greats by Ireland's Leading Folk Group
Publisher: Soodlum, 1984

The Green Fields of France
When You Were Sweet Sixteen
The Rooster
From Clare to Here
Leaving Nancy
O'Carolan Tribute
Derrol in the Rain
I Will Love You
Yesterday's People
The Big Ship's A-Sailing
Evening Falls
My Love Is Like a Red Red Rose
Night Ferry
The Lonesome Boatman
Her Father Didn't Like Me Anyway
Steal Away
Paddy and the Barrel (The Sick Note)
The Old Man
The Reason I Left Mullingar
Wounded Knee
Belfast Mill
Gallipoli
Song For Ireland
Dublin
A Song for the Fox
Katriona

This is the only Fureys songbook I have been able to find, and it doesn't have "Siege of a Nation."

I have no idea who the "mike" is above who says he transcribed it, and he did not say how to get a copy of his transcription.