Nulis terusan kanggo paragraf iki - Dheweke dadi kepala pameran pertambangan lan mineralogis AS ing pameran internasional ing Paris (1889), Chicago (1893), Atlanta (1895), Paris (1900), lan St. Louis (1904)
. lan Panjenenganipun maringi seri wolung ceramah ing "Batu-batu mulia" kanggo Lowell Institut kang 1894 <unk> 95 mangsa. Minangka ilmuwan, dheweke dadi anggota Mineralogical Society of America, American Association for the Advancement of Science, New York Academy of Sciences (sing tau dadi wakil presiden), New York Mineralogical Club, American Scenic and Historic Preservation Society (sing dadi presiden), American Chemical Society, American Institute of Mining and Metallurgical Engineers (sing tau dadi wakil presiden), lan akeh organisasi budaya, ilmiah, lan naturalis liyane.