Woolaver & Wilkinson - CP shops designers
Attached is a summary of info I found on Woolaver and Wilkinson, original designers of the CP Sacramento Shops in 1867. Woolaver appears to have been an architect, while Wilkinson was an engineer.
Attached is a summary of what I found, but I'm not very good at geneology. Perhaps someone else can help fill in birth and death dates, and other pertinent facts.
Apparently Woolaver died in Sacramento, I'm guessing late 1860s or early 1870s. Wilkinson continued working for the railroad, apparently in the San Francisco office in 1901.