Watched these last night and I thought they were interesting:
Raising Tower Bridge:
https://www.youtube.com/results?search_query=raising+tower+bridge
Lunch atop a skyscraper – New York construction workers c.1932:
https://www.youtube.com/watch?v=7QCYDzsQ_yM
The Silver Bridge disaster:
https://www.youtube.com/watch?v=8w5Fjouvma8
https://www.youtube.com/watch?v=VpGVP5yU6c8