Historic image LS_0005 is part of the 'DGMR lantern slides' collection; the topic area is 'Bulletin 35'. Location is Rockingham Co. (estimated). The image has the following description: 'Sketch map - Mass. Caverns. Bulletin 35, Figure 16, pg. 80 .' The image was scanned from a lantern slide as part of the USGS NGGDPP deliverable for 2017-2018. The physical location is 900 Natural Resources Dr., Ste 400, Charlottesville, VA 22903. Library. The author is William M. McGill. The image is dated 19330101.