donation from the descendents of betsy ross connected to, that had that revolutionary war diary of john claypool who eventually became betsy ross' third husband. there's an interesting story there. so what is the best book on the constitution convention of 1877 any recommendations jim? >> there are so many. the book by richard demon which gives a good overview. it is such a vast illiterate sure that could be a good starting place a good narrative of what happens. >> there is another questions about native american constitutions what other nations broke constitutions. maybe you want to talk about the cherokee constitution a little bit, bring it up? >> many do, many did and do have constitutions today. the cherokee constitution is an especially notable one. it was written in the 1820s. again it was part of the attempt by the cherokees to secure their place in this new transformer confident. the cherokees and other nations did. interesting things in order to, these are all different strategies. different native american groups, different places, different circumstances and up adopting different str