    Sentence t In what year did Wiliam Maciure begin the  Process of creating the first geological map of the U.S.?    Sentence 2: The results of his unaided labours were  ‘submitted to the American Philosophical Society in a  memoir entitled Observations on the Geology of the  United States explanatory of a Geological Map, and  Published in the Society's Transactions, together with the  nation's first geological map.    