Oooh nice one. Not only do I adore McKeever, but I never knew about Disease of Language being released. I have The Birth Caul somewhere in the house but never got round to finding Snakes and Ladders (though I have all Moore's spoken word performances, even the thoroughly entertaining "Brought to Light"), Campbell's artwork for the former is astonishing and I'm sure the latter will be also. Cheers for that.
I got the hardback edition of THE DISEASE OF LANGUAGE, when it came out. It also features a rather interesting interview with Alan Moore. The Birth Caul is an extraordinary work.