You can now read my article on 'Unwrapping the Past: Egyptian Mummies on Show' through JSTOR here:
https://www.jstor.org/stable/j.ctt1djmj49?turn_away=true
It is Chapter 11 of the book Popular Exhibitions, Science and Showmanship 1840-1910 (pp. 199-218)
Edited by Joe Kember, John Plunkett and Jill A. Sullivan (2016)