Rack railway (English Wikipedia)

Wrinn, Jim (19 Aug 2020). "Rebuilding a railroad above the clouds: Pikes Peak's cog". Trains. Archived from the original on 20 August 2020. Retrieved 20 August 2020. …new Strub cog rails, the most technologically advanced and least maintenance intensive system from Switzerland.

books.google.com

Abt, Roman (March 1910). Mountain and Rack Railways. Cassier's Magazine. Vol. XXXVII. p. 525.
Hitchcock, C. H. (1871). "Chapter IV: The Approaches to Mount Washington". Mount Washington in Winter. Boston: Chick and Andrews. pp. 82–85.
Electric Locomotives, The Electrical Magazine, Vol. VII, No. 3 (March 30, 1907); p. 179.
Conveying Machinery – Motor Haulage, Mechanical Engineer's Handbook, McGraw Hill, 1916; p. 1145.
J. J. Rutledge, Recent Improvements in Coal Mining in Illinois, Mining Magazine Vol. XIII, No. 3 (March 1906); p. 186.
Frank C. Perkins, Development of Electric Mine Locomotive, The Mining World, Vol XXIX, No. 1 (July 4, 1908); p. 3.
H. H. Stock, New River Coal Field, W. VA., Mines and Minerals, Vol. XXIX, No. 11 (June 1909); p. 513.
E. C. DeWolfe, Operations of Mammoth Vein Coal Co., Bussey, Iowa., The Black Diamond, Vol. 37, No. 5 (August 4, 1906), p. 28. Note, the article systematically misspells Everist as Everts, a spelling contradicted by all other sources.
Plant of the Donohoe Coke Co., Greenwald, Pa., The Black Diamond, Vol. 37, No. 1 (July 7, 1906), p. 28.
[https://books.google.com/books?id=VJvmAAAAMAAJ&pg=PA513 "Third- or Rack-Rail Haulage", Mining and Minerals, May 1904; p. 513.

"Sylvester Marsh". cog-railway.com. Archived from the original on 2016-03-04.
"Mount Washington Railway Company Historical Timeline". cog-railway.com. Archived from the original on 2006-10-07.

Roman Abt, Rack-Rail for Railways, U.S. patent 349,624, September 21, 1886.
Sylvester Marsh, Improvement in Locomotive-Engines for Ascending Inclined Planes, U.S. Patent 33,255, September 10, 1861.
Sylvester Marsh, Improved Cog-Rail for Railroads, U.S. Patent 61,221, January 15, 1867.
Roman Abt, Permanent Way for Mountain Railways, U.S. patent 284,790, September 11, 1883
Roman Abt, Locomotive, U.S. patent 339,831, April 13, 1886.
Emil Strub, Rack-Rail for Mountain-Railways, U.S. Patent 600,324, March 8, 1898.
Edmund C. Morgan, Electric-Railway System U. S. Patent 659,178, October 2, 1900.
Edmund C. Morgan, Electric-Railway System U. S. Patent 772,730, October 18, 1904.
Edmund C. Morgan and John H. Morgan, Switching System for Combined Third and Traction Rails for Electric Railways, U. S. Patent 772,732, October 18, 1904.
Edmund C. Morgan, Combined Third and Traction Rail for Electric Railways, U. S. Patent 753,803, March 1, 1904.
John H. Morgan, Switching or Crossover Device for Traction Rack Rail Systems, U.S. Patent 772,736, October 18, 1904.
John H. Morgan, Throw Rail for Combined Third and Traction Rail Switching, U.S. Patent 772,735, October 18, 1904.
Edmund C. Morgan, Cog wheel railway, U.S. Patent 1,203,034, October 31, 1916.
Edmund C. Morgan, Traction Rack for Railways, U. S. Patent 772,731, October 18, 1904.

"New Switching System Installed". Cog Railway Media Resources. Mount Washington Cog Railway. Archived from the original on 14 July 2014. Retrieved 14 July 2014.

Wrinn, Jim (19 Aug 2020). "Rebuilding a railroad above the clouds: Pikes Peak's cog". Trains. Archived from the original on 20 August 2020. Retrieved 20 August 2020. …new Strub cog rails, the most technologically advanced and least maintenance intensive system from Switzerland.

"Sylvester Marsh". cog-railway.com. Archived from the original on 2016-03-04.
"Mount Washington Railway Company Historical Timeline". cog-railway.com. Archived from the original on 2006-10-07.
"New Switching System Installed". Cog Railway Media Resources. Mount Washington Cog Railway. Archived from the original on 14 July 2014. Retrieved 14 July 2014.