Please just ask for photos and descriptions (bargain prices for quick sale, plus postage of course).....
"Cave Hunting" by Boyd Dawkins. First 1874 edition. 455 pages: .......................... ?100
"Underground Worlds or Life Below the Surface" by Knox. 1882. 1016 pages:......... ?30
"Subterranean Worlds" by Hartwig. 1885. 522 pages: ............................................. ?35
"Deep Down" by Ballantyne. 1929 or earlier. 272 pages: ............................................?8
"Half Hours Underground". 1888. 369 pages: ........................................................... ?30
"Cave Hunting" by Boyd Dawkins. First 1874 edition. 455 pages: .......................... ?100
"Underground Worlds or Life Below the Surface" by Knox. 1882. 1016 pages:......... ?30
"Subterranean Worlds" by Hartwig. 1885. 522 pages: ............................................. ?35
"Deep Down" by Ballantyne. 1929 or earlier. 272 pages: ............................................?8
"Half Hours Underground". 1888. 369 pages: ........................................................... ?30
