Placid Meadows, Ohio

The same ground, surveyed 72 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1914 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.

• 1914 USGS West Cincinnati quadrangle1:62500
• 1914 USGS West Cincinnati quadrangle1:62500
• 1914 USGS West Cincinnati quadrangle1:62500
• 1914 USGS West Cincinnati quadrangle1:62500
• 1950 USGS Covington quadrangle1:24000
• 1953 USGS Cincinnati quadrangle1:250000
• 1953 USGS Cincinnati quadrangle1:250000
• 1953 USGS Cincinnati quadrangle1:250000
• 1955 USGS Covington quadrangle1:24000
• 1957 USGS Cincinnati quadrangle1:250000
• 1961 USGS Covington quadrangle1:24000
• 1961 USGS Covington quadrangle1:24000
• 1961 USGS Covington quadrangle1:24000
• 1981 USGS Covington quadrangle1:24000
• 1981 USGS Covington quadrangle1:24000
• 1986 USGS Cincinnati quadrangle1:100000
• 1986 USGS Cincinnati quadrangle1:100000
• 1986 USGS Cincinnati quadrangle1:100000

The county history of 1881 has no passage naming this settlement, which was common for the smaller places. Its township is covered in full.

Museums hold 4,394 specimens collected within 10 miles of Placid Meadows between 1819 and 1975: 1,960 Fungi, 1,407 Animalia, 863 Plantae, 123 Protozoa, 21 Unrecorded, 19 Chromista, 1 Bacteria. 12 distinct Species records are shown. Collected by A Schwartz, A. Braun, A. F. Braun 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
	Clavaria striata Pers.	1899	Aiken, Walter H.	College Hill
	Corticium polyporoideum Berk. & M.A.Curtis	1899	C.G. Lloyd	Cincinnati
	Microsphaera diffusa Cooke & Peck	1899	Aiken, Walter H.	Cincinnati
	Quercus × leana Nutt.	1819	Thomas Nuttall	3 miles North of Cincinnati
	Atrichum angustatum (Brid.) Bruch & Schimp.	1820	T. G. Lea	probably Cincinnatti
	Barbula unguiculata Hedw.	1820	T. G. Lea	probably Cincinnatti
	Rhus venenata DC.	1830	Clark, Joseph	North of Cincinnati
	Equisetum arvense L.	1834	Short, Charles Wilkins; Lea, Thomas G.	Cincinnati
	Carex comosa Boott	1835	Collector unspecified	In citivate Ohio prope Cincinnati. [Inferred locality from precise loc.]
	Carex davisii Schwein. & Torr.	1835	Frank	in ditione Miami civitatis Ohio
	Carex lupulina Muhl. ex Willd.	1835	Joseph C. Frank	Cincinnati.
	Albugo candida (Pers. ex J.F.Gmel.) Roussel	1897	Kellerman, W.A.	College Hill

All 4,394 specimens within 10 miles, at the Global Biodiversity Information Facility.

The federal mineral resources record lists 5 workings within 5 miles of Placid Meadows: 3 past producers, 2 producers. 2 still produce. What was taken out: Salt, Stone, Crushed/Broken, 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 Hamilton County

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

Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.

This settlement is recorded in the Geographic Names Information System as feature 1049087. 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.