The first 7 were good choices.
The last 3...
The last 3...
But letters from him if I recall correctly. His will, who he left what to. Other legal documents. The house at the side of the museum is supposed to be the family house, first owned by his father. Extended here and there. That sort of thing. I think there was a chart showing family tree as well, but, as a visitor, can't be sure what evidence contributed to it's creation. You should pop over and have a look sometime 
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