I would recommend https://deepblue.lib.umich.edu/handle/2027.42/3972
which is the Preliminary Discussion of the Logical Design of an Electronic Computing Instrument, which describes the IAS machine.

On 2017, Dec 27, at 5:10 PM, Dave Horsfall <dave@horsfall.org> wrote:

We gained John von Neumann on this day in 1903, and if you haven't heard of him then you are barely human...  As computer science goes, he's right up there with Alan Turing.  There is speculation that he knew of Babbage's work; see https://cstheory.stackexchange.com/questions/10828/the-relation-between-babbage-and-von-neumann .

--
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."