The Celtic Heroic Age : Literary Sources for Ancient Celtic Europe and Early Ireland & Wales.
Edited by John T. Koch in Collaboration with John Carey. Malden, Massachusetts : Celtic Studies Publications, 1995. ISBN 0-9642446-2-4
Originally a reader for the Harvard Celtic Studies program, a wonderful collection of original sources from Classical authors to Medieval Wales. Has poems and Tales I haven't seen anywhere else, including the birth of Conchobor Mac Nessa, and the death of Fergus Mac Roich (Can't tell I'm a Tain freak, huh?). Also accounts of Boudicca from Tacitus and Dio Cassius, and Cartimandua from Tacitus. No info on Scathach! *sob*. Available from Ford & Baillie in the States..