After visiting your ophthalmologist, because I wrote "60s", I recommend online archive copies of Edmund Berkeley's "Giant Brains, or Machines That Think", originally written in the 1949 electromechanical era, with 1961 addenda reflecting electronic advances. He has insightful observations, speculations, and war cautions on computing and robotics, and an extensive list of references across various disciplines. He raises the (vacuum tube) IBM 650 as an example of digital progress. When I was quite young, I was allowed to press the Start button on a 650 in the Texas state comptroller's facility.