BlockBefore
Decorative drawing: a large timber barn with a gambrel roof. Not a photograph of this place.

Henny Barn

Listed on the National Register of Historic Places in 1979. A historic map-sheet match is not published yet. The record needs a coordinate-quality review before it can be joined to a sheet boundary.

From the record

one of 35 National Register listings in Seneca County · listed in 1979 · category: Building.

Sources: the case file at the National Archives · the National Register database, National Park Service

The listing

The ground it stands on

240,026 words

The chapter on Thompson Township in History of Seneca County, Ohio, Containing a History of the County, Its Townships, Towns, Villages ... Portraits of Early Settlers and Prominent Men; Biographies; History of the Northwest Territory; History of Ohio; Statistical and Miscellaneous Matter, Etc., Etc, published 1886 names Flat Rock. This is what it says, exactly as the scans read.

John Harpster, a native of Pennsylvania, entered eighty acres of land where Flat Rock Village now stands, in 1828, and is living at Clyde, Ohio. . . . David Harpster came with his parents to this county in 1828, settling on the site of Flat Rock .... Frederick Harpster, a native of Pennsylvania, came in 1830 from V^ ayne County, Ohio, to Flat Rock, and at one time owmed all the land now occiipied by that town. He died in 1874 .... Jefferson Hoover, a native of Ohio, was here in 1847 .... Joseph and Hannah Horner came to Thompson Township in 1835, where former earned on first tailor shop in vicinity of Flat Rock. They died in 1853. Squire Samuel Horner, their son, also came in 1835 .... John Heater and Ira Holmes are names connected with the *^arly days of Thompson Township.

Passage source: History of Seneca County, Ohio, Containing a History of the County, Its Townships, Towns, Villages ... Portraits of Early Settlers and Prominent Men; Biographies; History of the Northwest Territory; History of Ohio; Statistical and Miscellaneous Matter, Etc., Etc, published 1886.

John and Magdalena Sherck came to Thompson Township in 1834 and removed to Michigan in 1868. Their son, Hon. Joseph Sherck, mayor of Bellevue, Ohio, was brought by hi.s parents here in 1834, moving to Bellevue in 1873 .... Abram Sherck, with Samuel Sherck and William McCauley, founded Tbompsontown in 1840 .... George Scbock.born in 1812 in Pennsylvania, and his wife, Racbael (Korner), also a native of Pennsylvania, born in 1816, came to Thompson Township in 1836, accompanied by their parents, George and Margaret (Siebei-t) Schock (now deceased), and Andrew and Sarah (Hendi-icks) Korner .... The famous hunter and trapper, Snow, is supposed to have been the first white resident of the township . . , . The Sponables, referred to in other pages, were early residents here. . . .Samuel and Sarah (Wilts) Stewart located on Section 2, Thompson Township, in 1829. In 1867 they moved into Flat Rock, where the former died in 1870; his widow now resides there. . . .Peter Stetler, a Pennsylvanian, came to the county in 1837.

Passage source: History of Seneca County, Ohio, Containing a History of the County, Its Townships, Towns, Villages ... Portraits of Early Settlers and Prominent Men; Biographies; History of the Northwest Territory; History of Ohio; Statistical and Miscellaneous Matter, Etc., Etc, published 1886.

Machine-read from a century-old scan, so expect the errors a machine makes: misspelled names, dropped words, stray characters.

Read the whole chapter on Thompson Township - 240,026 words on its settlement, mills, schools and churches.

Specimens collected near this property

5 of 6 shown

Regional context, not property-specific evidence. Museums hold 6 specimens collected within 10 miles of Henny Barn between 1943 and 1969: 5 Plantae, 1 Animalia. 5 distinct Species records are shown. Collected by C A Foster, Jones, G.T., R.L. Stuckey. 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 SpeciesYear Collected by Where, as recorded
Specimen of Botrychium dissectum Spreng.Botrychium dissectum Spreng.1969Jones, G.T.In moist deciduous woods. Thompson Twp., 1 mi. n. of West Lodi.
Specimen of Botrychium virginianum (L.) Sw.Botrychium virginianum (L.) Sw.1969Jones, G.T.In moist deciduous woods Thompson Twp., 3 mi. w. of Flat Rock.
Specimen of Dryopteris spinulosa (O.F.Müll.) WattDryopteris spinulosa (O.F.Müll.) Watt1969Jones, G.T.in swampy deciduous woods Thompson Twp., 4 miles west of Flat Rock.
A photograph of the species Peromyscus leucopus, not of this specimenPeromyscus leucopus (Rafinesque, 1818)1943C A FosterFLATROCK
A photograph of the species Ludwigia alternifolia, not of this specimenLudwigia alternifolia L.1967R.L. StuckeyReed Twp., between Sec. 7 and 18

All 6 specimens within 10 miles, at the Global Biodiversity Information Facility.

Mines and quarries near this property

4 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 4 workings within 5 miles of Henny Barn: 2 past producers, 2 producers. 2 still produce. What was taken out: Limestone, General, Stone, Crushed/Broken, Limestone, Dimension, 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.

Where SiteCommodity StatusRecorded
Bellevue QuarryLimestone, Dimension, Stone, Crushed/BrokenProducer
Flat Rock QuarryStone, Crushed/BrokenProducer
Bellevue QuarryLimestone, GeneralPast ProducerSedimentary
Northern Ohio Stone QuarryLimestone, GeneralPast ProducerSedimentary

Every working recorded in Seneca County

Storms near this property

4 since 2006

Regional context, not property-specific evidence. The National Weather Service names Flat Rock, the town this property stands in, in 4 storm reports between 2006 and 2025: 3 hail, 1 thunderstorm wind. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

WhenEvent Place namedHarm What the report says
May 2025Thunderstorm WindFlat Rock-Snapped tree and downed tree limbs in Flat Rock.
January 2019HailFlat Rock-A trained spotter reported quarter-sized hail in Flat Rock in northeast Seneca County.
May 2007HailFlat Rock-Nickel size hail was observed.
May 2006HailFlat Rock-Penny size hail was observed.

Every storm recorded in Seneca County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

From the nomination file

6,195 words on record

When this property was proposed for the National Register, someone wrote the case for it: what the building is, and why it matters. That document is a federal record in the public domain. It is quoted below word for word, never summarised. The text was read off the scanned case file by machine, so the occasional stray character is the recogniser's and the 1970s typewriter's.

Description of the property

buildings with great facility, a saving of timber, and without requiring skilled help." masonry buildings, they were part of the movement to develop essentially pre-fabricated suitable dimensions, according to the size of the building to be erected." In this case, two planks are used (see photo 3 for identification of posts, girdens, etc.). The the corner of a building, one finds a joint such as that shown in photo 6; here tenoned with a cleat. On the other side of the beam, there are three planks, one running from CONDITION CHECK ONE the clues necessary to find the information below.

Morris and Slanser noted in their patent specifications that their goal was each have tenon ends which are fitted into the mortised planks forming the post.Beneath _DETERIORATED these girders is a single piece of wood with a section notched out that is exactly as Although the patent specifications sometimes contain the same material, the lengths so as to form therewith a compound plank construction that gives strength and the rafters forming the roof (see photo 3). These diagonal brace-pieces are bolted to width of the barn, which run from the sides of the barn to the center and are joined This patent also specifies that the planks making up the beams are of different shows how this girder and post joint is handled at a doorway.

buildings, since this barn would have been constructed of planks sawed at the saw mill girders meet at right angles with the one on the left in the photo slightly below the one with the diagonal brace pieces for the roof attached to the posts.

Read the complete 6,195-word case file.

Statement of significance

specitications indicate he lived in Lakue in 1876 and 1877. He became a partner in the and operated it himself until his death on November 15, 1902. A son, Joseph A., took over the business when his father died. Slanser, then, would have been a logical partner in consecutive years, is a prominent member and liberal supporter of the Methodist Episcopal Church, with which he has been officially connected as a minister for many years." Maybe PERIOD THEATER EDUCATION BUILDER/ARCHITECT ARCHEOLOGY-HISTORIC CONSERVATION RELIGION AGRICULTURE SIGNIFICANCE LAW atlas.

POLITICS/GOVERNMENT PREHISTORIC LITERATURE MILITARY INDUSTRY This barn is very important architecturally because it illustrates the use _COMMUNICATIONS _EXPLORATION/SETTLEMENT 1835 in Switzerland and was the son of Andrew and Catherine Slanser.One history says SOCIAL/HUMANITARIAN in the county history gives no clear clue to his involvement in the patents.

Morris was Rev.William Morris is a more interesting figure since the biographical sketch that his mother died in Switzerland and that Joseph and his father came to America in these inventions since he would have had a vested interest in promoting the use of lumber According to the Marion County histories, Joseph Slanser was born October 5, this barn is also in some danger since it is vacant and subject to vandalism.The details these inventions with Slanser, who may have seen this as an opportunity to experiment with turned up only one other barn like it in Seneca County (which is heavily used and He then taught for about four years, married, and fathered seven children. Morris was Morris and Joseph Slanser of LaRue (Marion County),Ohio.

An informal survey has _COMMERCE _PHILOSOPHY X_INVENTION developed on the same building. therefore almost impossible to photograph as well as this one) and none in Marion County; instead of the heavy beams then used in barns.

Read the complete 6,195-word case file.

The whole case file for this property - 6,195 words, 28 pages, reproduced complete.

Quoted from the National Register nomination for reference 79003646, 28 pages, held by the National Archives in Record Group 79. See the catalogue record.

Sources for this property

National Archives recordThe nomination case file for reference 79003646 in Record Group 79.
Seneca CountyAll 35 listed properties in this county.

Provenance

  • Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
  • Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
  • How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
  • 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.
  • Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.