The book is "The Stones Speak: Irish Place Names from Inscriptions in Boston's Mount Calvary Cemetery" by R. Andrew Pierce. I believe it is published by the NEHGS. I found it on several websites selling for $22.50. By no means does it include every stone in Calvary...and I might add that I believe this is limited to the Old Calvary. But it could be a great resource if you are researching Irish in Boston. Good Luck! Jerry