A collection of occasional surveys of iron, coal and oil districts in the United States, made during the last ten years

by Lesley, J. P. 1819-1903.
Published 1874

The iron manufacturer's guide to the furnaces, forges and rolling mills of the United States

by Lesley, J. P. 1819-1903.
Published 1859

The geology of Centre County

by D'Invilliers, E. V. 1857-1928.
Published 1884