The famed "von Neumann" architecture refers to a write-up he was asked to do to update the Army on progress on the ENIAC. He didn't even intend to publish it, the ENIAC was classified, it was Goldstine that published it with their names on it. See the "controversies" section here:
The book "Pioneer Programmer" by ENIAC programmer Jean Jennings Bartik goes into detail about the egos at play in taking credit for the work done by Eckert & Mauchly.