联合太平洋铁路4014号机车 (Chinese Wikipedia)

Union Pacific No. 4014 (PDF). RailGiants Train Museum (The Railway and Locomotive Historical Society, Southern California Chapter). August 2014 [2019-04-30]. （原始内容 (PDF)存档于2016-07-30）.

railwayage.com

Vantuono, William C. UP: A return to steam for Big Boy 4014. Railway Age. 2013-07-28 [2019-04-28]. （原始内容存档于2019-04-28）.

trains.com

trn.trains.com

Big Boy Work Begins. Trains. 2016-08-12 [2019-04-28]. （原始内容存档于2018-07-10）.
Progress report on Union Pacific Big Boy 4014. Trains. 2018-03-03 [2019-05-04]. （原始内容存档于2018-07-27）.
Union Pacific confirms Big Boy 4-8-8-4 No. 4014 for Ogden in 2019 and more. Trains. 2018-05-10 [2019-05-04]. （原始内容存档于2018-10-18）.
Big Boy No. 4014 fired up for the first time; May 12 excursion announced. Trains. 2019-04-10 [2019-04-16]. （原始内容存档于2019-04-10）.
Union Pacific to renumber SD70M No. 4014 before Big Boy runs. Trains. 2018-06-27 [2019-04-28]. （原始内容存档于2018-10-18）.
Diesel No. 4014 gets new number ahead of Big Boy debut. Trains. 2019-05-16 [2019-05-28]. （原始内容存档于2019-05-28）.
Wrinn, Jim. Under its own power, Big Boy moves outside of shop. Trains. 2019-05-02 [2019-05-02]. （原始内容存档于2019-05-02）.
Wrinn, Jim. Big Boy debuts with test run. Trains. 2019-05-03 [2019-05-03]. （原始内容存档于2019-05-03）.
Franz, Justin. Big Boy leads first public excursion up Wasatch Grade. Trains. 2019-05-12 [2019-06-10]. （原始内容存档于2019-06-10）.
Wrinn, Jim. Big Boy returns home. Trains. 2019-05-19 [2019-06-10]. （原始内容存档于2019-05-22）.
Wrinn, Jim. Big Boy stubs its toe with derailment. Trains. 2019-05-16 [2019-06-10]. （原始内容存档于2019-05-22）.

cs.trains.com

Wrinn, Jim. Big Boy 4014, a hydrostatic test, and why UP can beat the usual six month rule. Trains. 2019-02-08 [2019-05-30]. （原始内容存档于2019-05-30）.

up.com

Big Wheels Not Yet Turnin'. Community Ties. Union Pacific. 2013-08-15 [2019-05-05]. （原始内容存档于2017-12-10）.
Big Boy No. 4014 Prepares to Leave Pomona. Community Ties. Union Pacific. 2013-11-14 [2019-05-05]. （原始内容存档于2017-05-30）.
Fans Welcome Big Boy No. 4014’s Return to the National Rail Network. Community Ties. Union Pacific. 2014-01-27 [2019-05-14]. （原始内容存档于2019-05-01）.
West Colton Yard (PDF) (新闻稿). Union Pacific. [2019-06-06]. （原始内容 (PDF)存档于2019-06-06）.
"Living Legend" Northern No. 844. Union Pacific. [2019-05-03]. （原始内容存档于2019-04-21）.
Steam Update: Big Boy No. 4014 Restoration Begins. Inside Track. Union Pacific. 2016-08-11 [2019-04-27]. （原始内容存档于2018-08-06）.
Putting the 'Big Boy' Back Together. Inside Track. Union Pacific. 2018-03-22 [2019-04-27]. （原始内容存档于2018-09-17）.
Steam Update: Big Boy’s Restoration Nearly Complete. Inside Track. Union Pacific. 2019-01-29 [2019-04-27]. （原始内容存档于2019-04-27）.

uprr.com

Big Boy No. 4014 (PDF) (新闻稿). Union Pacific. [2019-05-04]. （原始内容 (PDF)存档于2016-08-30）.

web.archive.org

Union Pacific No. 4014 (PDF). RailGiants Train Museum (The Railway and Locomotive Historical Society, Southern California Chapter). August 2014 [2019-04-30]. （原始内容 (PDF)存档于2016-07-30）.
Big Boy No. 4014 (PDF) (新闻稿). Union Pacific. [2019-05-04]. （原始内容 (PDF)存档于2016-08-30）.
Vantuono, William C. UP: A return to steam for Big Boy 4014. Railway Age. 2013-07-28 [2019-04-28]. （原始内容存档于2019-04-28）.
Big Wheels Not Yet Turnin'. Community Ties. Union Pacific. 2013-08-15 [2019-05-05]. （原始内容存档于2017-12-10）.
Forgione, Mary. Big Boy's wheels to roll Monday on epic California-Wyoming journey. Los Angeles Times. 2014-04-28 [2019-04-30]. （原始内容存档于2016-09-09）.
Big Boy No. 4014 Prepares to Leave Pomona. Community Ties. Union Pacific. 2013-11-14 [2019-05-05]. （原始内容存档于2017-05-30）.
Fans Welcome Big Boy No. 4014’s Return to the National Rail Network. Community Ties. Union Pacific. 2014-01-27 [2019-05-14]. （原始内容存档于2019-05-01）.
West Colton Yard (PDF) (新闻稿). Union Pacific. [2019-06-06]. （原始内容 (PDF)存档于2019-06-06）.
Rader, Anna. Union Pacific Big Boy 4014 Arrives In Cheyenne. Wyoming Public Radio. 2014-05-08 [2019-04-30]. （原始内容存档于2015-10-01）.
"Living Legend" Northern No. 844. Union Pacific. [2019-05-03]. （原始内容存档于2019-04-21）.
Fike, Ellen. Big Boy 4014 restoration still set for completion in 2019. Wyoming Tribune Eagle. 2017-08-20 [2019-06-07]. （原始内容存档于2019-01-14）.
Steam Update: Big Boy No. 4014 Restoration Begins. Inside Track. Union Pacific. 2016-08-11 [2019-04-27]. （原始内容存档于2018-08-06）.
Big Boy Work Begins. Trains. 2016-08-12 [2019-04-28]. （原始内容存档于2018-07-10）.
Progress report on Union Pacific Big Boy 4014. Trains. 2018-03-03 [2019-05-04]. （原始内容存档于2018-07-27）.
Union Pacific confirms Big Boy 4-8-8-4 No. 4014 for Ogden in 2019 and more. Trains. 2018-05-10 [2019-05-04]. （原始内容存档于2018-10-18）.
Putting the 'Big Boy' Back Together. Inside Track. Union Pacific. 2018-03-22 [2019-04-27]. （原始内容存档于2018-09-17）.
Wrinn, Jim. Big Boy 4014, a hydrostatic test, and why UP can beat the usual six month rule. Trains. 2019-02-08 [2019-05-30]. （原始内容存档于2019-05-30）.
Steam Update: Big Boy’s Restoration Nearly Complete. Inside Track. Union Pacific. 2019-01-29 [2019-04-27]. （原始内容存档于2019-04-27）.
Big Boy No. 4014 fired up for the first time; May 12 excursion announced. Trains. 2019-04-10 [2019-04-16]. （原始内容存档于2019-04-10）.
Union Pacific to renumber SD70M No. 4014 before Big Boy runs. Trains. 2018-06-27 [2019-04-28]. （原始内容存档于2018-10-18）.
Diesel No. 4014 gets new number ahead of Big Boy debut. Trains. 2019-05-16 [2019-05-28]. （原始内容存档于2019-05-28）.
Wrinn, Jim. Under its own power, Big Boy moves outside of shop. Trains. 2019-05-02 [2019-05-02]. （原始内容存档于2019-05-02）.
Wrinn, Jim. Big Boy debuts with test run. Trains. 2019-05-03 [2019-05-03]. （原始内容存档于2019-05-03）.
O'Donoghue, Amy Joi. Thousands turn out as Big Boy locomotive rolls into Ogden. Deseret News. 2019-05-09 [2019-05-12]. （原始内容存档于2019-05-09）.
Franz, Justin. Big Boy leads first public excursion up Wasatch Grade. Trains. 2019-05-12 [2019-06-10]. （原始内容存档于2019-06-10）.
Wrinn, Jim. Big Boy returns home. Trains. 2019-05-19 [2019-06-10]. （原始内容存档于2019-05-22）.
Wrinn, Jim. Big Boy stubs its toe with derailment. Trains. 2019-05-16 [2019-06-10]. （原始内容存档于2019-05-22）.
Cobb, Debbie. Big Boy Derailed On Way To Laramie, Back On Schedule. KCGY. 2019-05-17 [2019-06-10]. （原始内容存档于2019-05-17）.

wyomingnews.com

Fike, Ellen. Big Boy 4014 restoration still set for completion in 2019. Wyoming Tribune Eagle. 2017-08-20 [2019-06-07]. （原始内容存档于2019-01-14）.

wyomingpublicmedia.org

Rader, Anna. Union Pacific Big Boy 4014 Arrives In Cheyenne. Wyoming Public Radio. 2014-05-08 [2019-04-30]. （原始内容存档于2015-10-01）.

y95country.com

Cobb, Debbie. Big Boy Derailed On Way To Laramie, Back On Schedule. KCGY. 2019-05-17 [2019-06-10]. （原始内容存档于2019-05-17）.