1. Zinc and lead deposits of Northern Arkansas Author/Creator: McKnight, Edwin Thor, 1902-1992, author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1935 Resource Type: Book Access & Availability: Loading
2. Zinc and lead deposits of northern Arkansas Author/Creator: Adams, George I. 1870-1932, (George Irving), author Publication/Creation: Washington : Department of the Interior, United States Geological Survey, 1904 Resource Type: Book Access & Availability: Loading