http://www.utulsa.edu/law/classes/rice/USSCT_Cases/0000_Test_Alpha_Index.htm should be good for a start. http://www.oneida-nation.net/TIME.HTML gives a fairly comprehensive timeline.
There should be no doubt in this case. The state of New York expelled the Oneida Indians from their ancient lands because they were "too white" and had become assimilated.
Think that one through ~ particularly if you live in New York. The precedent in the statutes and in the courts up there is that you can be "too white" to have property rights!
I see one case concerning the Oneidas at:
http://www.utulsa.edu/law/classes/rice/USSCT_Cases/Oneida_NY_v_County_Oneida_414_661.htm and am looking for some more...
There has also been recent litigation concerning land that may have been acquired illegally from First Nations peoples in the past 10-15 years. There are certainly areas that are under dispute. The whole of NY state is not in dispute (I believe), as many lands were acquired in a legal manner.
Will keep reading...