I think it is unlikely that you will find an attorney to address this on a pure contingency basis. To the extent you are planning on addressing disability discrimination claims, please keep in mind that the statute of limitations is 300 days from the last act of discrimination under the Federal laws and 3 years under the state.
I wish you the best of luck and I would advise you to speak with an attorney familiar with the intricacies of non-profits. I am not such an attorney, I am sorry.
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