The San Francisco papers invariably reported Klaber's age as "not quite 40" or words to that effect, but I'm inclined to accept the Census information.
Phil -- I'm very interested to hear that you have been in contact with Klaber's grandchildren. I'm reminded here of a thread a while back concerning descendants of 1st class passengers, and whether or not their wealth has retained through the years.
Klaber undoubtedly left a huge estate from his hop farming, and as Herman and Gertrude only had one daughter, the wealth couldn't have dispersed into lesser chunks, as was the case with larger families, such as the Ryersons and the Chaffees. So presumably, the grandchildren must have inherited quite a bit from their mother?
Hope you had a good xmas and new year!
Ben