Corrected entry: Lincoln refers to himself as "the last casualty of the Civil War." Although he used the phrase "a great civil war" in the Gettysburg Address, that name for the conflict wasn't generally applied to it until much later. In 1865, Lincoln would have called it "The War Between the States."
Corrected entry: Sheckly is revealed, at the end, to have hallucinated the plane and the entire investigation. How did his hallucination correctly presage the names and faces of the real airline employees, Malloy and Bengston, neither of whom he'd ever met? The Twilight Zone it may be, but unbelievably, Sheckly doesn't even seem surprised at this impossible occurrence.
Corrected entry: Because Earth is moving closer to the sun, Serling says here that there is no longer night anywhere on the planet. For this to occur, Earth would have to stop rotating and/or be close enough to the sun to be engulfed in its corona, both cataclysmic events that would annihilate all life on the planet.