Robertsburg, Ohio

The same ground, surveyed 68 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1924 1992

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.

• 1924 USGS Delaware quadrangle1:62500
• 1925 USGS Delaware quadrangle1:62500
• 1944 USGS Delaware quadrangle1:62500
• 1950 USGS Marion quadrangle1:250000
• 1961 USGS Prospect quadrangle1:24000
• 1961 USGS Prospect quadrangle1:24000
• 1962 USGS Marion quadrangle1:250000
• 1966 USGS Marion quadrangle1:250000
• 1966 USGS Marion quadrangle1:250000
• 1966 USGS Marion quadrangle1:250000
• 1986 USGS Bellefontaine quadrangle1:100000
• 1992 USGS Bellefontaine quadrangle1:100000

Museums hold 468 specimens collected within 10 miles of Robertsburg between 1871 and 1975: 409 Animalia, 42 Plantae, 13 Fungi, 2 Unrecorded, 2 Protozoa. 12 distinct Species records are shown. Collected by B. R. Laughlin, C F WALKER & W D STULL, C F WALKER AND W D STULL 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
	Vernonia maxima Small	1871	Collector unspecified	Scioto
	Buteo lineatus lineatus (Gmelin, 1788)	1887	not recorded	Delaware, near Olentangy River
	Dryobates villosus (Linnaeus, 1766)	1889	not recorded	Delaware
	Icteria virens virens (Linnaeus, 1758)	1889	not recorded	Delaware
	Tyrannus tyrannus (Linnaeus, 1758)	1889	not recorded	Delaware
	Falco sparverius sparverius Linnaeus, 1758	1890	not recorded	Delaware
	Muhlenbergia mexicana (L.) Trin.	1890	Wilcox, E.V.	Deleware
	Chordeiles minor minor (J.R.Forster, 1771)	1891	not recorded	Delaware
	Colaptes auratus luteus Bangs, 1898	1891	not recorded	Delaware
	Icterus spurius spurius (Linnaeus, 1766)	1891	not recorded	Delaware
	Spizella passerina passerina (Bechstein, 1798)	1891	not recorded	Delaware
	Agelaius phoeniceus phoeniceus (Linnaeus, 1766)	1892	not recorded	Delaware

All 468 specimens within 10 miles, at the Global Biodiversity Information Facility.

The federal mineral resources record lists 2 workings within 5 miles of Robertsburg: 1 past producer, 1 producer. 1 still produces. What was taken out: Limestone, General, Stone, Crushed/Broken. 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 Delaware 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 1062983. 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.