At the weekend I bought a small CADW publication called, <b>Anglesey, A Guide to Ancient Monuments on the Isle of Anglesey</b>. It was only £2.95, and has some info on the most famous sites on the island. The books covers a broad period, up to Medieval, but there's quite a bit of TMA period stuff in there.

The ISBN is: 1-85760-142-4, and I think it's available at most CADW shops (I was in Raglan, and you can't get much further from Anglesey than that without slipping into enemy territory).

K x