1920 - Irish Glass An Account of Glass-Making in Ireland From The XVIth Century To The Present Day, M. S. Dudley Westropp, M.R.I.A., Herbert Jenkins
[ Yes, I know, an original is not easily found and it usually costs a packet if you can find it ... just thought I'd admit to once having parted with a good sum of money in my quest for information!
But it was apparently reprinted in 1978, so maybe I could have saved some money??? ]
1955 - English and Irish Cut Glass 1750 - 1950, E. M. Elville, Country Life
1978 - Victorian Table Glass and Ornaments, Barbara Morris, Barrie & Jenkins
And for good, solid, basic info ...
1923 - Glass-Making in England, Harry J. Powell, C.B.E., Cambrdige University Press
1968 (reprint of 1849 publication) - Curiosities of Glafs Making, Apsley Pellat, The Ceramic Book Company