Here’s another great piece of history. This is a Superman Sunday Comic Strip #689 published in 1953 by the McClure Newspaper Syndicate. Here, the art of Wayne Boring, who had been a welcome staple for the Sunday strips, continues the tale of space creatures who have brought eggs to Earth. Scientists are unable to approach the alien spacecraft due to a forcefield (called an “electronic wall” and, in the strip) surrounding the craft. Superman contemplates attempting to crash through the barrier when, suddenly, the forcefield disappears. The scientists assume that…