A total of 227 geologic folios were produced by the United States Geological Survey between 1894 and 1945. We will be offering over 100 of them on eBay. Each folio includes both topographic and geologic maps for each quadrangle represented in that folio, and normally a description of the basic and economic geology of the same area. Some folios are not beautiful from the outside, but all are very functional, and the price is right.
Number/Name of Folio - No. 102, Indiana
State - PA, Indiana County
Issue Date - 1904
Contents include
Pages of Text - 7
Topographic Map - 1, 15-minute size
Areal Geologic Map - 1
Structure & Economic Geology Map - 1
Columnar Sections Table - 2
Illustration Sheet - 3 special smaller maps
Area Features/Towns - Indiana, Homer, Yellow Creek, Kunkle Hill, Plum Creek, Graceton
Condition (also note special conditions below) - Fine, very light cover edge chipping
All the folio’s are “Library Editions”, not “Field Editions”. They are 18.5x21.75" size, and may contain somewhere between 10 to 30 or so pages (major maps/tables are full page). Most cover a single USGS Quadrangle (typically 15 or 30-minute size). However, some cover between 2 and 5 quadrangles in a single folio. Several are “Special Districts”, covering a specific area rather than a complete quadrangle. Folio's will be sent rolled.
CONDITION NOTES
The Folio contents (especially maps) were printed on fine quality heavy paper; however, the covers were not. Covers are quite subject to soiling, chipping, tearing, chunks missing, etc, and if appropriate, covers may have been repaired with archival tape. Occasionally, the covers may have darkened the first text page inside. Unless otherwise noted in the description, it may be assumed that the contents of each folio are in Very Nice condition (this may include some light stains or short tears in the white borders of the pages).
Cover condition in the photo is usually NOT representative of the entire Folio.
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