He headed up the US mining and mineralogical exhibits at the international expositions in Paris (1889), Chicago (1893), Atlanta (1895), Paris (1900), and St. Louis (1904). He gave a series of eight lectures on "Precious Stones" for the Lowell Institute's 1894–95 season. As a gentleman scientist, he was a member of the Mineralogical Society of America, the American Association for the Advancement of Science, New York Academy of Sciences (of which he was once a vice president), the New York Mineralogical Club, the American Scenic and Historic Preservation Society (for which he served as president), the American Chemical Society, the American Institute of Mining and Metallurgical Engineers (of which he was once a vice president), and many other cultural, scientific, and naturalist organizations.