U.S. Route 136 in Nebraska (English Wikipedia)

Huebinger, M. (1911). "Huebinger's Map and Guide for Omaha-Denver Trans-Continental Route" (PDF). Ashland Historical Society. The Iowa Publishing Company. pp. 114–117. Retrieved January 26, 2017.

heritagehighway136.com

"Harlan County". Heritage Highway Byway 136. Heritage Highway 136 Committee. Retrieved January 22, 2017.
"Webster County". Heritage Highway Byway 136. Heritage Highway 136 Committee. Retrieved January 22, 2017.
"Nuckolls County". Heritage Highway Byway 136. Heritage Highway 136 Committee. Retrieved January 22, 2017.
"Thayer County". Heritage Highway Byway 136. Heritage Highway 136 Committee. Retrieved January 22, 2017.
"Nemaha County". Heritage Highway Byway 136. Heritage Highway 136 Committee. Retrieved January 22, 2017.

Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.

"Nebraska Highway Reference Log Book" (PDF). Nebraska Department of Roads. 2015. pp. 272–278. Retrieved January 8, 2017.
"Scenic Byways". Nebraska Department of Roads. Retrieved January 22, 2017.
Nebraska Department of Roads & Irrigation (August 1, 1937). Nebraska State Highway System (PDF) (Map).

Geelhart, Chris. "Nebraska Highway 1 to 30". Nebraska Roads. Retrieved January 25, 2017.

Davey, Monica (July 25, 2010). "Cities View Homesteads as a Source of Income". New York Times. Retrieved January 22, 2017.

"Tourism". Thayer County Economic Development Alliance. Thayer County Economic Development Alliance. Archived from the original on February 2, 2017. Retrieved January 22, 2017.

"Heritage Highway". The Armchair Explorer - Nebraska. Retrieved January 22, 2017.

Krough, Mildred (May 1933). Geography of the Oregon Trail in Nebraska. Lincoln, Nebraska: University of Nebraska. pp. 60–71.

Sanderson, Dale. "End of US highway 136". US Ends.com. Retrieved January 25, 2017.

"Heritage Highway". Visit Nebraska. Visit Nice. Nebraska Tourism Commission. Retrieved January 21, 2017.

"Tourism". Thayer County Economic Development Alliance. Thayer County Economic Development Alliance. Archived from the original on February 2, 2017. Retrieved January 22, 2017.
"National Register of Historic Places: Fairbury Rock Island Depot & Freight House" (PDF). Nebraska State Historical Society. Archived from the original on June 16, 2010. Retrieved January 22, 2017.{{cite web}}: CS1 maint: unfit URL (link)