Brecknockshire XLIX.NE (6 inch to the mile) - Brecknockshire XLIX.NE (6 inch to the mile)
OS revised: 1914, Geological Survey revised: 1927 to 1929, Published: 1932 Size: map 31 x 46 cm (ca. 12 x 18 inches), on sheet ca. 47 x 67 cm (ca. 18 x 26 inches)