Listen to the first-ever Superman radio serial from 1940 (which doesn't even feature Superman!)

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Jun 26, 2015, 4:17 PM EDT (Updated)

While we get ready to see Superman meet up with Batman for the first time on the big screen in 2016, it’s easy to forget that Clark Kent first made the jump from comics a full 75 years ago.

Shortly after the character’s comic debut, a series of Superman radio serials launched to massive fanfare. They beat the films and animated series by a few years, and were actually a huge part of the puzzle that made Superman such a massive cultural force -- along with the comics, of course. The radio series would go on to produce 2,068 episodes before it wrapped in 1951.

But it all started 75 years ago this week with the debut episode of the radio serial Adventures of Superman. Oddly enough, the first installment didn’t even really feature Superman/Clark Kent. Instead, it was focused on the situation back on Krypton, which sets the whole story in motion when Kal-El is sent to Earth.

The first episode, along with virtually the entire run, is preserved over at the Internet Archive. Check out the first episode below, and click here to keep going for a longer trip down memory lane: