
O.E. Craster published a Ministry of Works guide to the Ancient Monuments of Anglesey in 1953. My 1972 copy is a 9th impression (with amendments). Price 17 1/2 p. Although the cover is in English the title page has a parallel title, Cyfarwyddyd I Henebion Mon. There is also a three page summary in Welsh at the end (pp. 42-44). The guide has is “Prepared by the Department of the Environment on behalf of the Welsh Office”.
The guide is organised by period:
- Neolithic Age
- Bronze Age
- The Early Iron Age and Roman Occupation
- The Early Christian Period
- The Middle Ages and Later Period
In all, 23 sites are listed. Many have sites plans.

The 10th impression (1977; cost, 60 p) is very similar although the summary in Welsh is appropriately entitled Crynodeb (pp. 44-46). There is also a short list of further reading including three DOE pamphlets for Beaumaris Castle, Barclodiad y Gawres, and Bryn Celli Ddu. Notice the sublte change of title to Ancient Monuments in anglesey.A

The ‘blue guide’ was replaced by a yellow CADW guide (small format) in 1989 (revised edition 1994; cost £2.25) by Lesley Macinnes. This has an introductory section on the historical and archaeological background, and then groups the monuments on three ‘tours’: Eastern Anglesey, Western Anglesey, and Holyhead. There is further reading, as well as a fold out map of Anglesey. The sub-title of the volume is A Guide to Ancient and Historic Sites on the Isle of Anglesey.
The replacement CADW guide is by M.J. Yates and David Longley (3rd ed. 2001). It has the sub-title A Guide to Ancient Monuments on the Isle of Anglesey.