The title of Jerome Rothenberg's newest collection suggests jazz, blues, and above all the Dada movement in European art and poetry in the years immediately following World War I. "In my own world," he explains in his pre-face to That Dada Strain, "the Dada fathers who inhabit the opening poems of this book are necessary figures, & to summon them up along with their legends is no more erudite than to summon up Moses or George Washington or Harpo...