Geological Maps.- A large collection of maps from the Geological Survey of England and Wales, 1:63,360 geological map series [Old Series], hand-coloured engravings, government blindstamps, stamps of T. & C. Hawksley, staining, tears, many with scratches to surface, microfilm stickers, plate 380 x 510mm or 650 x 960mm, 1840s-80s, with five horizontal sections, published by Sir H.T. De la Beche, plate 670 x 980mm; Five maps from the Geological Survey of Ireland, 1:63,360 geological map series; Borough of Ryde. Section of the geological formations between Portsdown and Ventnor with special reference to the Isle of Wight, ink & wash, paper laid onto linen, scales, sheet 510 x 1800mm, 1874 (quantity)