1930 census--H & R Block
Henry and Richard Bloch were born and raised in Kansas City, the second and third sons of a prominent Kansas City lawyer, Leon Bloch. The 1930 census enumeration for their family indicates they were not living in the low rent district. They were the founders of the tax preparation giant H and R Block.
It might be a little taxing, but you can search the 1930 for your relative at Ancestry.com