2nd and sometimes 3rd editions of the six inch county maps were published from 1900 to 1945 on the same layout and numbering as the first edition but the large folio format was quartered to a sheet size approx 16 x 24 inches. The maps are untitled; the place name given is the most prominent on the map. The two dates given refer to the date of the topographic base map survey and the geological survey date. These maps use two or three colour printing in outline but without colour infill. Where maps are coloured in this has been done by a previous owner/user. Following the introduction of the National Grid coordinate system, the six inch geological maps adopted a national numbering system and standard 5 x 5 km format.
Drybrook, 1924/ 1939, black outline, blue geology, In fair to good condition.
Howler Hill, 1924/ 1941, black outline, red geology, In fair condition.
Little Dean, 1924/ 1939, black outline, blue geology, In very good condition.
Pillowell, 1924/ 1940, black outline, blue geology, In very good condition.
Lower Soudley, 1924/ 1949, black outline, red geology, In good condition.