alt Hacker NewsI cited Watson and Crick '53 in my PhD thesis and I did go dig it up and read it.
I had to go to the basement of the library, use some sort of weird rotating knob to move a heavy stack of journals over, find some large bound book of the year's journals, and navigate to the paper. When I got the page, it had been cut out by somebody previous and replaced with a photocopied verison.
(I also invested a HUGE amount of my time into my bibliography in every paper I've written as first author, curating a database and writing scripts to format in the various journal formats. This involved multiple independent checks from several sources, repeated several times.
Totally! If you haven't burrowed in the stacks as a grad student, you missed out.
The real challenges there aren't the "biggies" above, though, it's the ones in obscure journals you have to get copies of by inter-library agreements. My PhD was in applied probability and I was always happy if there were enough equations so that I could parse out the French or Russian-language explanation nearby.