Lock, 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.

1892 1982

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.

• 1892 USGS Huntington quadrangle1:125000
• 1898 USGS Huntington quadrangle1:125000, 3 printings
• 1901 USGS Guyandot quadrangle1:62500
• 1902 USGS Guyandot quadrangle1:62500, 4 printings
• 1957 USGS Barboursville quadrangle1:24000, 2 printings
• 1957 USGS Huntington quadrangle1:250000, 3 printings
• 1960 USGS Huntington quadrangle1:250000
• 1968 USGS Barboursville quadrangle1:24000, 3 printings
• 1982 USGS Huntington quadrangle1:100000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 229 fires within 5 miles of Lock between 1992 and 2020, burning about 387 acres in total. None started naturally. 56 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Settlements close enough to share some of these fires:

• Fair Place
• Guthrie
• Le Mae
• Riverview
• Belle Court
• Brookover Estates

Every fire recorded in Lawrence County

Regional context, not property-specific evidence. Museums hold 742 specimens collected within 10 miles of Lock between 1840 and 1974: 524 Animalia, 117 Plantae, 78 Fungi, 20 Protozoa, 2 Chromista, 1 Unrecorded. 12 distinct Species records are shown. Collected by Archer W. A., BARBOUR, DOUGLAS I, BARUCH 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
	Microsphaera alni (DC.) G.Winter	1892	W.A. Kellerman	Symmes Creek
	Polanisia dodecandra (L.) DC.	1840	Short, C.W.	along Ohio River
	Eragrostis reptans (Michx.) Nees	1880	T Meehan
	Cambarus bartonii (Fabricius, 1798)	1900	not recorded	Guyandotte River
	Gymnosporangium juniperi-virginianae Schwein.	1903	Beale J. M.	Guyandotte
	Coniothyrium fuckelii Sacc.	1904	Brooks Fred E.	Huntington
	Venturia inaequalis (Cooke) G.Winter	1904	Brooks F. E.	Huntington
	Haematoloechus longiplexus Stafford, 1902	1905	Collector(s): Daniel R. Brooks, David Zamparo	Huntington
	Cladosporium carpophilum Thüm.	1906	C.M. Davidson
	Albugo bliti (Biv.) Kuntze	1909	Summers, T. B.	Huntington
	Coprinus Pers., 1797	1909	Sambert	Barboursville
	Marssonina populi (Lib.) Magnus	1909	Sheldon John L.	Huntington

All 742 specimens within 10 miles, at the Global Biodiversity Information Facility.

Regional context, not property-specific evidence. The federal mineral resources record lists 2 workings within 5 miles of Lock: 2 past producers. 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 Lawrence 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 1050494. 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.

Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.

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.