This is a good read for a lot of reasons. It is also an excellent example of the definition, scope and format used during oral history interviews. Now many in mainstream see these as secondary sources primarily as a result of the 'after the fact' effect... unless substantial amounts of other forms of confirming evidence (ie. primary evidences) are available to substantiate the comments. Ntl, oral interviews, even given lapses in memory, can give historians valuable insights into the mentalities, reasonings, context and appreciation of events; as seen by the participants, during a particular era.
I have had the honor of conducting several. And in every case the participants were delightful and helpful and kindly considerate of the effort to capture history.
There is a lot of experience found here and a lot of names being bandied about. Some who were to ultimately be considered quite controversial for a variety of reasons. That's good and should, if given the pursuit of the method, stimulate any budding or experienced researcher into further effort and analysis before being firmly committed to a theorem or fact.
So enjoy it.