Geologic Map of the Philmont Ranch Region, 1964, from USGS professional paper 505. Plate 3. Scale 1:48,000. Folded colour print, 37.5"x30". Clean bright and in very good condition. Part of set of 6 folded plates in plastic sleeve : pl.1 Philmont Landscape-a Birdseye View (block diagram), 17"x31"; pl.2 The Parade of Philmont Rocks, a B&W stratigraphic column; pl.4 The Geology of Philmont – A Birdseye View (block diagram), 17"x31"; pl.5 Geologic Sections of the Philmont Ranch Region (1:48,000) 14"x30"; and pl.6 Geologic Structure of Philmont (block diagram sections). A splendid set of hight quality colour graphics integrating plans sections and block diagrams to a very high cartographic standard. In very good to fine condition.