Elm Center, 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 Ottawa quadrangle1:62500
• 1908 USGS Ottawa quadrangle1:62500
• 1953 USGS Fort Wayne quadrangle1:250000
• 1953 USGS Fort Wayne quadrangle1:250000
• 1953 USGS Fort Wayne quadrangle1:250000
• 1953 USGS Fort Wayne quadrangle1:250000
• 1956 USGS Fort Wayne quadrangle1:250000
• 1956 USGS Fort Wayne quadrangle1:250000
• 1960 USGS Ottawa quadrangle1:24000
• 1960 USGS Ottawa quadrangle1:24000
• 1960 USGS Ottawa quadrangle1:24000
• 1986 USGS Defiance quadrangle1:100000

The county history of 1915 has no passage naming this settlement, which was common for the smaller places. Its township is covered in full.

Museums hold 95 specimens collected within 10 miles of Elm Center between 1860 and 1969: 87 Animalia, 8 Plantae. 12 distinct Species records are shown. Collected by Adler, K. K., Blyth & Katz, Bureau of Fisheries 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
	Lampsilis radiata radiata (Gmelin, 1791)	1893	Bureau of Fisheries	Blanchard River
	Lasmigona costata (Rafinesque, 1820)	1893	not recorded	Blanchard River, Ottawa
	Ligumia recta (Lamarck, 1819)	1893	O. E.	Blanchard River, Ottawa
	Hybopsis amblops (Rafinesque, 1820)	1860	unknown	Blanchard R. at Ottawa
	Botaurus lentiginosus (Rackett, 1813)	1878	not recorded
	Calidris alpina (Linnaeus, 1758)	1878	Porter collection, J.B.
	Calidris minutilla (Vieillot, 1819)	1878	Porter collection, J.B.
	Chlidonias niger (Linnaeus, 1758)	1878	Porter collection, J.B.
	Gallinago gallinago (Linnaeus, 1758)	1878	Porter, J.B.
	Gallinula chloropus (Linnaeus, 1758)	1878	Porter, J.B.
	Sterna hirundo Linnaeus, 1758	1878	Porter collection, J.B.
	Botaurus Stephens, 1819	1879	not recorded

All 95 specimens within 10 miles, at the Global Biodiversity Information Facility.

The federal mineral resources record lists 1 working within 5 miles of Elm Center: 1 past producer. None of them still produces. What was taken out: Clay. 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 Putnam 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 1064615. 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.