Polygonal Barn, Lincoln Township

Listed on the National Register of Historic Places in 1986.

From the record

“The Polygonal Barn, Lincoln Township was a historic building located in Lincoln Township in rural Johnson County, Iowa, United States. It was built in 1880 by George Frank Longerbean.”
Wikipedia article Polygonal Barn, Lincoln Township, CC BY-SA 4.0.

One of 96 National Register listings published here for Johnson County · listed in 1986 · category: Building.

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

The listing

What is counted as historic. The nomination lists 1 building as contributing to the listing.
Address. Off US 6, West Liberty, 52240
When was it listed? June 1986
Category. building
Also known as. Iowa Round Barns: The Sixty Year Experiment TR
Township. Lincoln township
National Register reference number. 86001452 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

14 since 2009

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 14 fires within 5 miles of Polygonal Barn, Lincoln Township between 2009 and 2016, burning about 449 acres in total. None started naturally. None was 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.

Reported cause	Fires
Debris and open burning	8
Missing data/not specified/undetermined	4
Equipment and vehicle use	2

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

Date	Cause	Size	Reported by	Name on the report
26 June 2012	Debris and open burning	under an acre	Iowa Department of Natural Resources	not named
1 June 2010	Missing data/not specified/undetermined	under an acre	Iowa Department of Natural Resources	4733 HWY 6 SE, IOWA CITY, IOWA
7 April 2013	Debris and open burning	1.5 acres	Iowa Department of Natural Resources	not named
5 April 2013	Missing data/not specified/undetermined	4.0 acres	Iowa Department of Natural Resources	not named
4 April 2016	Missing data/not specified/undetermined	under an acre	Iowa Department of Natural Resources	WEST BRANCH FIRE DEPT.
16 April 2014	Debris and open burning	4.0 acres	Iowa Department of Natural Resources	not named
16 April 2009	Missing data/not specified/undetermined	20 acres	Iowa Department of Natural Resources	not named
1 April 2014	Debris and open burning	5.0 acres	Iowa Department of Natural Resources	not named

Every fire recorded in Johnson 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.

Listed places nearby

6 within 8 miles

Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.

Property	Distance	Listed
Secrest Octagon Barn	2.2 miles	1974
James McCollister Farmstead	7.7 miles	1976
Kirkwood House	7.7 miles	1974
Longfellow Historic District	7.8 miles	2002
Clark House	7.8 miles	1996
Muscatine Avenue Moffitt Cottage Historic District	7.9 miles	1993

Sources for this property

National Archives record	The nomination case file for reference 86001452 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Johnson County	All 96 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.
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.