Allen, D.F., An Introduction to Celtic Coins, London, 1978, 80pp, illustrations in text; Haselgrove, C., Supplementary Gazetteer of Find-Spots of Celtic Coins in Britain, 1977, London, 1978, 136pp; Haselgrove, C., Celtic Coins Found in Britain 1982-1987, London, nd, 75pp; de Jersey, P., Celtic Coinage in Britain, Princes Risborough, 1996, 56pp, illustrations in text [4]. All very fine copies £20-30