Apparently there was another archaeology project which discovered information regarding Reno's Black history. The following link is an article which identifies Black West artifacts from 1920's. It is not old west but does fall into the time-frame of famous Black westerners like Billy Pickett and George McJunkin.
"Entrenched in Nevadaís history: On a modern schedule, scientists scramble to uncover history
Ben Kieckhefer RENO GAZETTE-JOURNAL
8/28/2004 09:31 pm
...As a part of digging the train trench, the city contracted with MADCON to monitor various aspects of the project, including any discovery of historical resources. Reno Public Works Director Steve Varela said the overall trench project is under budget and on schedule. The dig is not expected to delay the project because most of the current trench work is away from the site.
About 80 historical sites have been found, including the Frank Brotherís Wholesale Wine and Liquors bottling plant, and the former Harlem Club, a casino for black residents and visitors from around the 1920s and 1930s. "