Yes. That’s the book. The corporate media jumped all over it and just loved it because it was politically useful to them. They could cite it to try to claim America didn’t have such deep roots with individual firearms ownership after all. The problem was it was all fake. So they quietly dropped it and never mentioned it was all bunk from the start.
As you suggest, the problem is of a larger dimension. One prominent Cold War historian moved to the right in the 1980s when primary source materials were declassified. The new evidence discredited the Left’s anti-US interpretations about the origins of the Cold War that had come to prevail in much of academia. In the concluding phase of his career, the professor praised Reagan’s strategy and approach to the USSR and correctly predicted its success, to the chagrin of many Leftist colleagues.