I am no historian of the spread of of Taoism, but "Both books brought the previously obscure philosophy of Taoism to the attention of mainstream America." seems

I am no historian of the spread of of Taoism, but "Both books brought the previously obscure philosophy of Taoism to the attention of mainstream America." seems overstated. And though I was around then, and perhaps even reading the NY Times best-seller list from time to time, I never before reading this item had heard of The Te of PIglet.