I just read a fun book about Claude Monet. Ross King's "Mad Enchantment: Claude Monet and the Painting of the Water Lilies" dives into Monet's personality and circle of friends in the period of the first World War and the painting for his grand decoration: the prodigious cycle of water lily paintings.
So, I've gotten Monet on the brain a little as I draw and dabble in the studio and elsewhere. Ross King's other art historical books are entertaining and I always recommend them. Even his short-ish biography of Machiavelli (not exactly an art historical figure) is fascinating reading.