The papers concern the Rembrandt Peale Mines, free coal, mine insurance costs, Estep Brothers Coal Mining Co., and company houses. Also included in the collection are advertising publications for sanitation equipment. Correspondents include: Rembrandt Peale, H.A. Wertz, George M. Estep, G.E. Metzger, H.W. Henry, W.B. Oates, T.A. Estep, and F.N. Artley.