Situation: Warren Xxx is storytelling his college life to business students. The topic is the subject's collage.
Warren Xxx: There was this collage, it had its name of teachers who were teaching it, and I was amazed at what I saw because some of the teachers were the authors of the books I had had read before I met them in person.
Or
Warren Xxx: There was this collage, it had its name of teachers who were teaching it, and I was amazed at what I saw because some of the teachers were the authors of the books I had read before I met them in person
What I wanted to clarify is Warren Xxx had read some books first, before he saw the collage. Moreover, is it had had read or just had read?
(With all respect, please focus on the bold letters, this is a grammar/tenses question) I maybe wrong with the grammar, that is why I'm asking it and not to damage someone else's reputation.