Also, if you have not already, I highly recommend reading Witness by Whitaker Chambers about the Communist infiltration of the State Department and the Alger Hiss trial. It's thick and not light reading (made even heavier by his pronouncement that this war cannot be won) but it ties a lot of these things together.
Thank you for the reading recommendations. I’ll pass on ‘Witness’ since today’s reality is discouraging enough without working through a thick tome, only to read at the end that there isn’t anything that can be done about it. I’ll try to get to ‘Righteous Indignation’.