I want to know the answer to the following question:
How much did  philanthropic foundations donate between 1925 and 1940?
All the background I'm provided with is that "Between 1925 and 1940, philanthropic foundations, especially ones connected with the Rockefellers, contributed about $7 million to support the Yale Institute of Human Relations and the affiliated Yerkes Laboratories of Primate Biology.". Is that enough to answer the question?