The San Francisco Chronicle website has a gallery of photos from when the BART system was originally under construction in the 1960s and 1970s. You can see the photos here.
There is a photo of people on a walking tour through the Transbay Tube.
Also, there is a photo of then-President Nixon riding BART in 1972.
– – –
(Image credit: Wikimedia Commons)
The Dublin Pleasanton BART Station under construction, much later, in 2009.
– – –
[…] Photos of BART Under Construction […]