Altitudes given in feet., Contours at 200 feet vertical intervals., Copy 2: Includes sheets 1, 2A, 3, 4A, 6A, 7A, 9A (two copies), 10-11, and 12A, with various corrections between 1928 and 1930., and Diagram showing adjoining sheets in margins.
Altitudes given in feet., Contours at 200 feet vertical intervals., Copy 1: Imperfect: sheets 2-7 wanting. Accompanied by extra sheet 9 with minor corrections to 1925., Covers affixed verso not digitized., and Diagram showing adjoining sheets in margins.