I recommend Joshua Rivkin’s book on Cy Twombly, “Chalk” (2018); Mary Gabriel’s capacious group portrait of Abstract Expressionists, “Ninth Street Women” (2018); Patti Smith’s memoir of her friendship with Robert Mapplethorpe, “Just Kids” (2010); or Cynthia Carr’s take on David Wojnarowicz, “Fire in the Belly” (2012)