Ohlton, Ohio

The same ground, surveyed 78 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1908 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.

• 1908 USGS Warren quadrangle1:62500
• 1908 USGS Warren quadrangle1:62500
• 1952 USGS Canfield quadrangle1:24000
• 1956 USGS Cleveland quadrangle1:250000
• 1956 USGS Cleveland quadrangle1:250000
• 1956 USGS Cleveland quadrangle1:250000
• 1962 USGS Cleveland quadrangle1:250000
• 1963 USGS Canfield quadrangle1:24000
• 1963 USGS Canfield quadrangle1:24000
• 1963 USGS Canfield quadrangle1:24000
• 1963 USGS Canfield quadrangle1:24000
• 1986 USGS Youngstown quadrangle1:100000
• 1986 USGS Youngstown quadrangle1:100000

Museums hold 136 specimens collected within 10 miles of Ohlton (historical) between 1883 and 1974: 117 Animalia, 14 Plantae, 5 Fungi. 12 distinct Species records are shown. Collected by A.E. Daugherty, Armbruster, D. C. (Daniel C.), B Withers 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
	Eurytoma pater Girault, 1920	1915	W. Phillips	Youngstown
	Peniophora Cooke, 1879	1926	F. O. Grover	128 Forest St., M. M. Metcalf's yard, slope of S. side of low land
	Thalictrum dioicum L.	1883	Meissner, C.A.	Brier Hill, O
	Asplenium trichomanes L.	1885	Shafer, J.A.	Lantermans Falls near Youngstown
	Cystopteris bulbifera (L.) Bernh.	1885	Shafer, J.A.	Lantermans Falls, near Youngstown
	Dryopteris intermedia (Muhl. ex Willd.) A.Gray	1885	Shafer, J.A.	Lanterman Falls, near Youngstown
	Phegopteris connectilis (Michx.) Watt	1885	Shafer, J.A.	Mill Creek just below Iona Falls, near Youngstown
	Aplectrum hyemale (Muhl. ex Willd.) Nutt.	1896	Ransom, R.	Perkins (Corners)
	Arigomphus villosipes (Selys, 1854)	1900	E. Williamson	[Not Stated]
	Parascalops breweri (Bachman, 1842)	1901	not recorded	Ellsworth
	Microtus pennsylvanicus (Ord, 1815)	1909	Vichery, E. W.	Ellsworth, Mahoning Co., Ohio, USA
	Onoclea sensibilis f. obtusilobata (Schkuhr) Gilbert	1910	Vickers, E.W.	Ellsworth

All 136 specimens within 10 miles, at the Global Biodiversity Information Facility.

The federal mineral resources record lists 1 working within 5 miles of Ohlton (historical): 1 producer. All of them still produce. What was taken out: Aluminum. 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 Mahoning 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 1051846. 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.