I was very impressed with this set of images of the famous Franklin Expedition Daguerreotypes on the Scott Polar Research Institute's website:
The images of Couch and Stanley are especially interesting as they are of much better definition than most of the reproductions of their Daguerreotypes in circulation.
Original post: https://hidden-tracks-book.blogspot.com/2010/03/excellent-set-of-daguerreotype-images.html?fbclid=IwAR06E38s5imwmVuLqeTtQAPqpu6vAn8NI6RPMvwmo6MGGd6isSCGPrXhMDs