The first geological map of the U.S. was produced in 1809 by William Maclure.[2][3] In 1807, Maclure commenced the self-imposed task of making a geological survey of the United States. Almost every state in the Union was traversed and mapped by him; the Allegheny Mountains being crossed and recrossed some 50 times.
http://en.wikipedia.org/wiki/Geologist
That is were I got some of it. Almost all of it.