How many Central Pacific Railroad tunnels?

How many Central Pacific Railroad tunnels were “blasted through the granite mountains” of the Sierra Nevada?

John J. Berry, clerk in the San Francisco CPRR office, 1874-1876

From: "Pam Meeds Williams" pamymwms@gmail.com

... Great website!

I am looking for information on John J. Berry, who was a clerk in the San Francisco CPRR office in 1874 to 1876.

He died in 1876 when he committed suicide on his wife's grave at Calvary Cemetery in San Francisco.

I work at the Moraga Historical Society and we have a headstone for Eliza Berry, who we believe is his wife. We think they are from Michigan.

Would there be any old employee records going back that far still in existence? If so where might they be? ...

—Pamela Meeds