Clarks, Ohio

The same ground, surveyed 90 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1904 1994

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.

• 1904 USGS Chardon quadrangle1:62500
• 1906 USGS Chardon quadrangle1:62500
• 1906 USGS Chardon quadrangle1:62500
• 1956 USGS Cleveland quadrangle1:250000
• 1956 USGS Cleveland quadrangle1:250000
• 1956 USGS Cleveland quadrangle1:250000
• 1960 USGS Painesville quadrangle1:24000
• 1960 USGS Painesville quadrangle1:24000
• 1960 USGS Painesville quadrangle1:24000
• 1960 USGS Painesville quadrangle1:24000
• 1960 USGS Painesville quadrangle1:24000
• 1962 USGS Cleveland quadrangle1:250000
• 1985 USGS Cleveland North quadrangle1:100000
• 1994 USGS Cleveland North quadrangle1:100000
• 1994 USGS Painesville quadrangle1:24000

Museums hold 1,299 specimens collected within 10 miles of Clarks (historical) between 1864 and 1975: 1,026 Animalia, 154 Plantae, 100 Fungi, 10 Chromista, 6 Protozoa, 3 Unrecorded. 12 distinct Species records are shown. Collected by A. Doolittle, A. F. Clewell, A. Woolman 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
	Asclepias quadrifolia Jacq.	1885	Werner, WM.C.	near Painesville
	Athyrium filix-femina subsp. angustum (Willd.) R.T.Clausen	1885	Werner, Wm. C.	Painesville
	Periploca graeca L.	1886	Werner, WM.C.	Near Painesville
	Leucodon brachypus Brid.	1864	E. J. Ferris
	Mnium spinulosum Bruch & Schimp.	1864	E. J. Ferris	Painesville
	Dicranella heteromalla (Hedw.) Schimp.	1871	H. C. Beardslee, Sr.
	Didymodon tophaceus (Brid.) Lisa	1871	H. C. Beardslee, Sr.
	Discelium nudum (Dicks.) Brid.	1871	H. C. Beardslee, Sr.
	Drepanocladus polycarpos (Blandow ex Voit) Warnst.	1871	H. C. Beardslee, Sr.
	Eurhynchium pulchellum (Hedw.) Jenn.	1871	H. C. Beardslee, Sr.
	Fontinalis sphagnifolia (Müll.Hal.) Wijk & Margad.	1871	H. C. Beardslee, Sr.
	Orthotrichum stellatum Brid.	1871	H. C. Beardslee, Sr.

All 1,299 specimens within 10 miles, at the Global Biodiversity Information Facility.

The federal mineral resources record lists 1 working within 5 miles of Clarks (historical): 1 producer. All of them still produce. 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 Lake 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 1067429. 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.