They should start by interrogating James and Cathleen on how they got their money! ;)
James (Jim) started out in a well to do upper middleclass family. Father an attorney and his mother an editor at Seventeen Mag. Went to good schools and did well and then was APPOINTED by Ducacus to be Insurance Commissioner in Mass when he was a young man. Then, after playing the leftists games politically, he was APPOINTED by Carter to be CHAIRMAN of the Commodities Futures Trading Commission after which forty years ago he started his own insurance group, Plymouth Assurance and made his pile of money. His wife is a well connected leftist environmental lawyer bouncing from APPOINTMENT to practice on her way up the leftist chain.
They have give these grants of similar size to a number of stools to chum up the waters for a climate for confiscatory wealth tax laws by leftists, IMHO.
Cathleen Stone is the widow of Justice William Douglas. They married when he was 68 and she was 22. They remained married until he died at 82.
My guess is family money. Jim Stone may be related to Justice Harlan Fiske Stone who passed away in 1946.