A new episode of Research Rabbit Hole, our Facebook Live show, premiered Monday evening, February 22, at 9 p.m. ET.

Season 1, Episode 4, explores the issue of viewing early photographs—daguerreotypes, ambrotypes and tintypes—in reverse. Photographers, inventors and other technologists of the mid-19th century were adaptable and most likely could have fixed it, but they did not. Why? Because lateral reversal is a 21st century problem!

The full season is available on YouTube.

New episodes of Research Rabbit Hole will be released every two weeks on our Facebook page. The host, Ronald S. Coddington, is Editor and Publisher of Military Images.