Just picked up:
Exact Thinking in Demented Times by Karl Sigmund. A history piece on the Vienna Circle, math, physics, philosophy and the interwar period.
Four of the Three Musketeers by Robert Bader on the stage career of the Marx Brothers. Particular detail on 1905 to 1934 and the 1920s height of Vaudeville.
17 Carnations by Andrew Morton. Edward VIII and Wallis made significant errors in judgement over and over and over again.
And for comics, I’m into the second of three hardback compilations of all of Alan Moore’s Promethea. Slow and steady.