After several years of searching, I was finally able to secure an image of the grave marker for Colonel Lucien Loeser, the first commander of the 7th West Virginia Cavalry. He is buried in Green-Wood Cemetery in Brooklyn, New York. [Green-Wood Cemetery, 5th Avenue & 25th Street, Brooklyn, Kings County, New York.]
Special thanks to Jeff Richman, cemetery historian, for his assistance!
Link to Memorial of Lucien Loeser on Find a Grave…