18013. Sheards, E. H.   Origin of the Hard Rock Phosphate Deposits of Florida.   Florida Geological Survey, 1913, Annual Report, 5 : 25-80, 9 plates and 2 maps.   Printed wraps, minor previous owner marks, usual signs of use and age, text in good or better condition.   Fossil plates from the phosphate deposits.   $11.00

14227. Sellards, E. H. and Gunter, H.   On the Petroleum Possibilities of Florida.   The Florida Geological Survey, 1922, Annual Report, 14 : 1-135, 10 figures, map missing from back pocket.   Printed wraps, previous owner marks on front wrap, usual signs of use and age, map missing from back pocket, text in very good condition.    $19.00

18021. Vernon, R. O.   Geology of Holmes and Washington Counties, Florida.   Florida Geological Survey, 1942, Geological Bulletin, 21 : 1-161, 20 figures, 8 tables, 2 plate maps missing.   Printed wraps, back wraps and map plate missing, usual signs of use and age, text in good or better condition.    $11.00

18014. Calver, J. L.   Mining and Mineral Resources.   Florida Geological Survey, 1957, Geological Bulletin, 39 : 1-132, 35 figures and 12 plates.   Printed wraps, small moisture stain in lower corner that does not impact text, usual signs of use and age, text in good condition.    $22.00

18012. Vernon, R. O.   Thirteenth Biennial Report of the Florida Geological Survey.   Florida Geological Survey, 1959, Biennial Report, 13 : 1-84, 12 figures, 4 tables, 2 maps.   Printed wraps, signs of use and age, text in good or better condition.    $15.00