This can be somewhat problematic, as the Modern History contains some mistakes as you label them, as they do not go along with your perspective.
I mentioned one, about GM NAM Tae Hi's training. He's not in the 1946 promotion photos, so I seriously doubt that he was teaching anyone in 1947. This is confirmed by GM LEE Won Kuk. But the fact that the 1947 stuff is in the Modern History book goes to the point that even GM KANG Won Sik (or more likely GM LEE Kyong Myong, a former ITF member) can't escape from adding in General Choi, which leads to errors.
There are former ITF people out there who are still alive who can confirm what GM LEE Won Kuk said. GM KANG Suh Chong for example. Someone should go ask him about GM Nam and see what he says about it.