I saw a reference to Adelina Patti's appearance at Piper's Opera House in Virginia City when I visited there a few years ago. There was no date as I recall and no details such as her programme were given. I would be delighted to know of the billing you saw - did you copy it? Have you any other information?
I imagine that when Patti visited the railway ran from Reno so the journey can't have been too arduous.
Why my interest? I grew up near Patti's Craigynos Castle in Wales when she was still talked about by people who remembered her, including her butcher's daughter. She was much revered locally.
Brian Jones
Oxford, England