Cortsville, Ohio

The same ground, surveyed 79 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1907 1986

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

• 1907 USGS South Charleston quadrangle1:62500
• 1907 USGS South Charleston quadrangle1:62500
• 1947 USGS Columbus quadrangle1:250000
• 1961 USGS Columbus quadrangle1:250000
• 1961 USGS South Charleston quadrangle1:24000
• 1961 USGS South Charleston quadrangle1:24000
• 1961 USGS South Charleston quadrangle1:24000
• 1962 USGS Columbus quadrangle1:250000
• 1967 USGS Columbus quadrangle1:250000
• 1967 USGS Columbus quadrangle1:250000
• 1986 USGS Springfield quadrangle1:100000
• 1986 USGS Springfield quadrangle1:100000

The History of Clark County Ohio,, published 1881 names this settlement in its chapter on Green Township. These are the passages that mention it, exactly as the scans read.

Regional context, not property-specific evidence. Museums hold 1,180 specimens collected within 10 miles of Cortsville between 1840 and 1975: 741 Animalia, 312 Plantae, 125 Fungi, 2 Unrecorded. 12 distinct Species records are shown. Collected by 73.7; J.H., ?, A JOHN and others. Each is a physical object with a catalogue number, and each entry opens the museum's record. This is what was collected and kept, not a survey of what lives here - nothing can be concluded from a species being absent.

Image	Species	Year	Collected by	Where, as recorded
	Cystopteris protrusa (Weath.) Blasdell	1878	Beardslee, H.C.	near Springfield
	Conardia compacta (Müll.Hal.) H.Rob.	1910	H.S. Jewett	Neff Park, Yellow Springs
	Hygroamblystegium irriguum var. spinifolium Mönk.	1913	Henry S. Jewett	Neff Park
	Caulophyllum thalictroides (L.) Michx.	1840	Williams, M.G.	Springfield
	Staphylea trifolia L.	1840	Williams, M.G.	Springfield
	Funaria hygrometrica Hedw.	1846	not recorded	Springfield
	Bidens bipinnata L.	1870	J Y Bergen; T L Bergen	Yellow Springs
	Bryhnia graminicolor (Brid.) Grout	1870	J. W. Eckfeldt	near Springfield
	Bryum pseudotriquetrum var. bimum (Schreb.) Lilj.	1870	J. W. Eckfeldt	Springfield
	Hygroamblystegium tenax subsp. orthocladon (P.Beauv.) Wijk & Margad.	1870	J. W. Eckfeldt	Springfield
	Schwetschkeopsis denticulata (Sull.) Broth.	1870	J. W. Eckfeldt	Springfield
	Amblystegium serpens var. angustifolium H.Lindb. ex Limpr.	1871	H. J. Biddlecome	Springfield

All 1,180 specimens within 10 miles, at the Global Biodiversity Information Facility.

Regional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of Cortsville: 1 past producer. None of them still produces. What was taken out: Sand and Gravel, Construction. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Every working recorded in Clark County

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

This settlement is recorded in the Geographic Names Information System as feature 1060998. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

Specimens. Global Biodiversity Information Facility (GBIF), https://www.gbif.org/. Only records licensed CC0 or CC BY are used. Records licensed CC BY-NC are excluded because this site carries advertising. Images are checked individually and any whose licence is non-commercial, no-derivatives or unreadable is refused.

Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.