Morgan Andrew Robertson said he had invented the periscope. He had written a story, called The Submarine Destroyer, in 1905, which featured a submarine provided with a telescoping periscope, and called it a periscope, so he claimed he had invented the thing.
A former jeweler that had to find another job due to a loss of eyesight, Robertson mostly wrote sea stories, being the son of a Great Lakes captain and having spent ten years in the Merchant Marines (he had ran away from home at the age of 16, in 1877).

He mostly wrote short stories and novellas, that he sold to the story magazines that came before the pulps. He started writing, apparently, after reading some rather bad sea stories and going “What the heck! I can do better than that!”

He never made much money with his writing, but he sort of did better than that. Continue reading →