A State of Michigan Historical Marker honoring Douglass Houghton was dedicated Saturday, Sept. 10, 2016, in a morning ceremony led by the Keweenaw County Historical Society in Eagle River. Among the approximately 70 attendees were several descendants of Douglass Houghton. The marker was proposed by the Michigan Basin Geological Society centered in Lansing. Ted Bornhorst, executive director of the A. E. Seaman Mineral Museum, and Larry Molloy, president of the Keweenaw County Historical Society, led a geological and historical field trip for the Michigan Basin Geological Society all day Friday and Saturday afternoon to the Keweenaw Peninsula for a group of 30 geologists and guests. As part the guided field trip, the group visited the museum on Friday evening where a life sized oil painting of Douglass Houghton is on exhibit. The painting was done in the 1870’s by Bradish and a duplicate was purchased by the Michigan House of Representatives in 1879. Mineral specimens collected by Douglass Houghton are on exhibit at the museum. These specimens are part of the University of Michigan mineral collection co-owned by the museum under the Michigan Mineral Alliance.