Good & bad news.
Bad: my website is offline
Good: all my books are available again! Volume 1-4 went OOP last year and are now available on Lulu.com
Volume 5 got re-released as well, as an updated and expanded edition.
https://www.lulu.com/search?contributor=Dennis+Pellegrom&adult_audience_rating=00&page=1&pageSize=10
On that site you can check each volume and see which interviews are included.
Here’s the cover of the last book in this 5-volume series:
