This tombstone in Forest Cemetery, Circleville, Ohio is a great example of the Modern Woodmen of America. Many genealogists and taphophiles are familiar with the Woodmen of the World organization, which placed countless tree-stump tombstones on the graves of its deceased members. The Modern Woodmen of America is older than WOW, though it was founded by the same man, Joseph Cullen Root. He formed MWA in Lyons, Iowa in 1883. He left the organization and formed WOW in Omaha, Nebraska in 1890.
Modern Woodmen of America is still an active fraternal/insurance organization. Today it offers a variety of insurance and financial services. Its website features a timeline of its history.
I had not seen one of these before. Thanks so much for the post and photos!