"...John von Neumann made a key contribution in his unpublished report...However ... some perplexing observations emerge... important, but previously unrecognized, features of the von Neumann design. The von Neumann Report contains a wealth of insight and analysis which is still not available elsewhere... Few people have had the opportunity to read and decipher the original typescript...The computer defined in the First Draft Report on the EDVAC was never built and its architecture and design seem now to be forgotten. "
I collected some info here:
http://blog.thstart.com/2009/07/first-draft-report-on-edvac-june-30.html
Some perplexing observations emerge reading von Neumann's unpublished report | Heykuki News