While not about Franklin (or even John Rae) there is another "icy" exhibition going on in Edinburgh right now, "Enduring Eye" at the National Library of Scotland on George 1V Bridge: this follows the voyage of Ernest Shackleton in the "Endurance" to Antarctica in 1914-17. The exhibition continue until November 12th.
See: https://www.nls.uk/news/press/2017/06/antarctica-photographs