This is a new and haunting project on which I am trying to share all the audio recorders I can find with the voices of some polar explorers. It was a person in the Polar Facebook group called Polar exploration who gave me the idea of compiling all these voices from the past.
Unfortunately, the first device capable of recording voice, the phonograph, was invented in 1877 by Thomas Edison. Later in 1877 Emilie Berlinier invented the most widely known and popular Gramophone. This means that we would never have the chance to listen to the voices of some of the early explorers, though some of them had long lives which stepped in the period of time where recording was possible.
What I have found are mainly short radio talks or interviews released in television but I will keep on searching.
Henry Larsen (thanks to Logan Zachary)