All of Einstein's writings are now online
alberteinstein.info
alberteinstein.info
All 80,000+ documents from the archives:
http://alberteinstein.info/vufind1/Search/Results?lookfor=*&...
I know, intuitive, right? You know it's a "a user-friendly interface" because they say so [1].
"Notes on field theory and general relativity", by using the query "General relativity". I hope there'll be more like this, it's quite interesting to see.
http://www.theonion.com/articles/new-biography-reveals-einst...
Even so, I am unable to figure out how to access the document. Perhaps I am missing something relevant?