Timeline of The Transcontinental Railroads

https://cdn.knightlab.com/libs/timeline3/latest/embed/index.html?source=1OZq-lczMFoyO6j7qvVk1r9QSk8q1pFqtPLoCQWZstEQ&font=Default&lang=en&initial_zoom=2&height=650

Reference:

https://www.shmoop.com/study-guides/history/transcontinental-railroad/timeline

https://www.pbs.org/wgbh/americanexperience/features/tcrr-timeline/

https://www.up.com/heritage/steam-meet/index.htm