Horizontal Section No. 68 (1865). 1. From Little Eye Island, in Dee Estuary, to Horwich Moor Lancs, by Birkenhead, Liverpool, Knowsley Parks, Billinge Beacon, and Wigan Coal District. Geological Survey of GB. 1stHorizontal Section No. 68 (1865). 1. From Little Eye Island, in the Dee Estuary, on the W, to Horwich Moor Lancashire, on the E, by Birkenhead, Liverpool, Croxteth and Knowsley Parks, Billinge Beacon, and the Wigan Coal District. Geological Survey of GB. 1st edition. Located on Old Series one inch maps 79ne, 80nw, and 89ne. Hand coloured engraving 70 x103. 5cm, 1: 10,560 scale (6= 1mile). Flat, linen taped edges, age toned, library stamp on back.