American Philosophical Society. Transactions on the American Philosophical Society... Vol. I--New Series. Philadelphia, 1818. Engraved colored folding map and 12 engraved plates (one folding). 4to, half morocco, front cover detached; ex-library copy (Library Company of Philadelphia)." /> MACLURE, WILLIAM. "Observations on the Geology of the United States of North America..." In: <I>American Philosophical Society. Transactions on the American Philosophical Society...<I> Vol. I--New Series. Philadelphia, 1818. Engraved colored folding map and 12 engraved plates (one folding). <I>4to, half morocco, front cover detached; ex-library copy (Library Company of Philadelphia).</I> | Christie's