Index map of Gillespie County, Texas, showing location of Plates 1 to 5. Western part of Gillespie County. Central part of Gillespie County. Eastern part of Gillespie County. Map of City of Fredericksburg. City of Harper. Analyses made, maps prepared, data assembled, and report mimeographed by Works Progress Administration Project 6507-5112."Sponsored by the State Board of Water Engineers with the Bureau of Industrial Chemistry of The University of Texas and the U.S. Geological Survey cooperating."