I have been recently looking over sources that I have found for a second time with new eyes. It is interesting and insightful. For example, I looked at the 1930 Census for my great grand father John Silva. He and his second wife were living in Oakland California at the time with their children. The house that they lived in was valued at $4,000. This equates to about $50,000 today (I get this using the BLS’s inflation calculator). I then looked at a statistical abstract for the United States, published but the U.S. Census Bureau, for 1930 and discovered that the norm for foreign born whites in urban California. Yes I knew that my great grand father lived in Oakland California prior to this exercise but now that knowledge is so much richer.