Building of the Jupiter & 119 Locomotives
I meant to include this video with the post on steam locomotives I did a couple of days ago, but I was short on sleep and it slipped out of my mind. This one got my attention because it happened in my neck of the woods (the Western USA), but I had never heard of it. Completing the first transcontinental railroad was kind of a big deal. The video is a little gooberish, but it does have some good info.