I regret not arranging it beforehand. I had a brief window of opportunity but it fell on a Friday night and no one was available at the brain donation center in Boston that evening. I left a page which was answered but it was too late to do anything. I really wish I could have had the donation done before the cremation, it would have been nice to know if it really was LBD or not.
I contacted the Harvard University Brain Bank here:
I don't know if it's elsewhere but I also found BU accepts donations.
Boston University - here's the link I followed:
http://www.bu.edu/alzresearch/research/ ... brain.html