Where can I find Dirac's original papers?

[alemsalem]

is there a free source for old original papers? especially the one where the Dirac equation is derived?

Thanks

 

[unusualname]

Search for author 'Dirac' at the Royal Society's free site, most of his classic papers are in Proceedings A, you need to go to last page of search results for earliest papers:

http://royalsocietypublishing.org/search

Dirac Equation was first published in 'The Quantum Theory of the Electron' Proc. R. Soc. Lond. A 1928 117, 610-624

 

[alemsalem]

Thanks!