Nonprofit organization dedicated to geoscience
The Geological Society of America (GSA )[ a] nonprofit organization dedicated to the advancement of the geosciences .
The Geological Society of America building in Boulder, Colorado, U.S., from above, c. 2013 Geological field excursion to Harpers Ferry, West Virginia, April 30, 1897, following the George Huntington Williams Memorial Lectures delivered by Sir Archibald Geikie at Johns Hopkins University. The photograph was taken by Joseph S. Diller at Jefferson Rock , above Harpers Ferry . Individuals in photo include (starting at top): Cleophas C. O'Harra, Sir Archibald Geikie , Frederick H. Newell , Henry B. Kümmel , George Burbank Shattuck, Rollin D. Salisbury , Arthur Clifford Veatch, Louis Marcus Prindle, Harry F. Reid , Charles R. Van Hise , Cleveland Abbe, Jr. , George Willis Stose, Thomas Leonard Watson, Edward Vincent D'Invilliers, Clarence Wilbur Dorsey, Frederick J.H. Merrill , Louis A. Bauer , Arthur Coe Spencer, William J. McGee , William B. Clark , Rufus Mather Bagg, Frank Hall Knowlton, Robert T. Hill , Heinrich Ries , Frank D. Adams , Arthur P. Coleman , Timothy William Stanton, Oliver L. Fassig , Samuel F. Emmons , George F. Becker , Albert Berthold Hoen, George O. Smith , James F. Kemp , Bailey Willis , David White , Edward Bennett Mathews, Charles D. Walcott , John W. Powell , Joseph Stanley-Brown, Joseph Austin Holmes , Charles Willard Hayes, Leonidas Chalmers Glenn, Henry S. Williams . Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page ).
