Where did thomas Edison donated his money?

Thomas Edison was a very generous and philanthropic man. After he perfected the light bulb he toured the United States displaying his invention. While in the West he stopped at an Indian reservation and was appalled at the deplorable conditions. Being the very generous and philanthropic man that he was, he decided to do something to alleviate the plight of the Indians.

And in a moment of PR genius he decided to install his new invention in all the Indian's outhouses. From that day on, Thomas Edison was also known as:

The first man to wire a head for a reservation.