Journeys Telford_2021 Railroad_2021 https://commons.princeton.edu/josephhenry/wp-content/uploads/sites/71/2022/05/Sparks-Fly-at-Hellifield.mp4 https://commons.princeton.edu/josephhenry/wp-content/uploads/sites/71/2022/05/Miraflores_Locks_Panama_Canal_24h_time_lapse_-_small.mp4 Flam 1737-2019-el Flam Loco paper Flam Low-Frequency_Oscillation_in_Electric_Railway_Depot_A_Comprehensive_Review Flam Progress_in_railway_mechanical_engineering_1996-1997_survey-locomotives Flam thesis FULLTEXT01 Flam TR10_2011 Flam Unconventional Bogie Designs Their Practical Basis and Historical Background