Map of South Wales
Subtitle: showing the distribution of long barrows and megaliths. Scale: four miles to an inch
Publisher: Ordnance Survey Off.
Published: 1936
Place of publication: Southampton
Language: eng
Number of pages: 56
Notes: "Published by authority of the Ministry of Agriculture and Fisheries." - Back cover.

"This map incorporates the results of a survey which has been made by Mr. W.F. Grimes." - p. 3.

"Bibliography" included in the tables.