This article describes the history of the computing facility at Los Alamos during the Manhattan Project, 1944 to 1946. The hand computations are briefly discussed, but the focus is on the IBM Punch Card Accounting Machines (PCAM). During WWII the Los Alamos facility was one of most advanced PCAM facilities both in the machines and in the problems being solved.
Cite
@article{arxiv.2103.05705,
title = {The Los Alamos Computing Facility during the Manhattan Project},
author = {B. J. Archer},
journal= {arXiv preprint arXiv:2103.05705},
year = {2021}
}