Curse you, non-free journals

Trying to find the original research that I'm working with for psychology is much harder than I'd like - I'm looking for some quite old studies from 1900s to 1990s, but all I can find is the journals for the past 3 years being sold for 20 pound each...

On a related note, I've started learning LaTeX, and after only a couple of days I've already stopped using all WYSIWYG word processors