File:"Back to Our Roots" in Iowa (20170805-OSEC-LSC-1667).jpg

Original file (6,517 × 4,636 pixels, file size: 19.96 MB, MIME type: image/jpeg)

Captions

English

A portion of the special purpose 3-foot wide rear wheels of the 1910 75-horsepower Case “Montana Special” steam tractor, are seen at this year’s annual Grain Harvest Festival at the Iowa Living History Farms, Urbandale, IA, on Aug. 5, 2017. .

Summary

Description	English: A portion of the special purpose 3-foot wide rear wheels of the 1910 75-horsepower Case “Montana Special” steam tractor, are seen at this year’s annual Grain Harvest Festival at the Iowa Living History Farms, Urbandale, IA, on Aug. 5, 2017. The wide wheels were needed for when the Montana soil became soft. The Tractor is seen here setup to drives a belt to power an antique threshing machine. The owner Nick Foster, says the tractor is known as a breaker, because it was used to initially breakup the Montana prairie soil. Today, the thresher is being used to separates oat seeds from the harvested plant. USDA Photo by Lance Cheung.
Date	Taken on 5 August 2017, 15:36:48
Source	20170805-OSEC-LSC-1667
Author	USDAgov
Flickr sets InfoField	"Back to Our Roots" in Iowa; Secretary Perdue Back to Our Roots Tour
Flickr tags InfoField	listening; bus; rv; rural; usdepartmentofagriculture; tour; backtoourroots; livinghistoryfarms; departmentofagriculture; farmbill; tractor; prosperity

Camera location	41° 37′ 19.32″ N, 93° 47′ 01.54″ W	View this and other nearby images on: OpenStreetMap	41.622032; -93.783760

Licensing

This image was originally posted to Flickr by USDAgov at https://flickr.com/photos/41284017@N08/38176335996. It was reviewed on 26 February 2026 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark.

26 February 2026

This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

English ∙ español ∙ 日本語 ∙ 한국어 ∙ македонски ∙ Nederlands ∙ русский ∙ slovenščina ∙ українська ∙ Tiếng Việt ∙ 中文（中国大陆） ∙ 中文（繁體） ∙ +/−

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	06:10, 26 February 2026		6,517 × 4,636 (19.96 MB)	OptimusPrimeBot (talk \| contribs)	#Govmedia - Upload of https://live.staticflickr.com/4444/38176335996_055d8d63c4_o.jpg via Commons:Spacemedia

You cannot overwrite this file.

File usage on Commons

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Camera manufacturer	NIKON CORPORATION
Camera model	NIKON D810
Exposure time	1/250 sec (0.004)
F-number	f/10
ISO speed rating	320
Date and time of data generation	15:36, 5 August 2017
Lens focal length	350 mm
Latitude	41° 37′ 19.31″ N
Longitude	93° 47′ 1.54″ W
Altitude	288 meters above sea level
Label	Approved
Image title	A portion of the special purpose 3-foot wide rear wheels of the 1910 75-horsepower Case“Montana Special” steam tractor, are seen at this year’s annual Grain Harvest Festival at the Iowa Living History Farms, Urbandale, IA, on Aug. 5, 2017.The wide wheels were needed for when the Montana soil became soft. The Tractor is seen here setup to drives a belt to power an antique threshing machine. The owner Nick Foster, says the tractor is known as a breaker, because it was used to initially breakup the Montana prairie soil. Today, the thresher is being used to separates oat seeds from the harvested plant. USDA Photo by Lance Cheung.
Usage terms	www.usda.gov
Orientation	Normal
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	NIKON D810 Ver.1.11
File change date and time	20:11, 6 November 2017
Exposure Program	Normal program
Exif version	2.21
Date and time of digitizing	15:36, 5 August 2017
APEX shutter speed	7.965784
APEX aperture	6.643856
APEX exposure bias	0
Maximum land aperture	5 APEX (f/5.66)
Metering mode	Center weighted average
Light source	Unknown
Flash	Flash did not fire, compulsory flash suppression
DateTimeOriginal subseconds	8
Color space	Uncalibrated
Focal plane X resolution	2,048.4022216797
Focal plane Y resolution	2,048.4022216797
Focal plane resolution unit	3
Sensing method	One-chip color area sensor
File source	Digital still camera
Scene type	A directly photographed image
Custom image processing	Normal process
Exposure mode	Auto exposure
White balance	Auto white balance
Digital zoom ratio	1
Focal length in 35 mm film	350 mm
Scene capture type	Standard
Scene control	None
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Subject distance range	Unknown
GPS time (atomic clock)	19:36
Satellites used for measurement	09
Geodetic survey data used	WGS 84
GPS date	5 August 2017
GPS tag version	0.0.3.2
Serial number of camera	3056286
Lens used	80.0-400.0 mm f/4.5-5.6
Date metadata was last modified	17:59, 6 November 2017
Rating (out of 5)	5
Unique ID of original document	7AEEDC1100B90765E4973F4D20D956E0
Copyright status	Copyright status not set
Keywords	USDA "Department of Agriculture" "U.S. Department of Agriculture" Back to Our Roots bus RV Tour listening
Contact information	lance.cheung@oc.usda.gov www.flickr.com/photos/usdagov 1400 Independence Avenue, SW Washington, District of Columbia, 202150 USA
IIM version	4

Structured data