In light of Leonard Liggio‘s recent death, Simon Franek sends along this interview from 1973 which he found in the archives of the recently closed FEE headquarters in New York. In it Leonard Liggio and Murray Rothbard discuss their history in the libertarian movement and their thoughts on non-interventionism.
Here is the full text in PDF. Below is the first page.
Update: Simon Franek has provided the text below.