Amber interviews author Aaron J. Leonard to discuss his book "A Threat of the First Magnitude: Counterintelligence & Infiltration From the Communist Party to the Revolutionary Union — 1962-1974"
You can find A Threat of the First Magnitude here:
https://repeaterbooks.com/product/a-threat-of-the-first-magnitude-fbi-counterintelligence-infiltration-from-the-communist-party-to-the-revolutionary-union-1962-1974/
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