Which of the books used at the FOMC meetings is/are treated as secret documents and not released to the public until after a number of years have passed?

Question

Quizplus · Accepted Answer

The blue book and the green book are both treated as secret documents and not released to the public until after a number of years have passed, according to the Federal Reserve's website. The beige book, however, is meant for public release and is published eight times a year.

Which of the Books Used at the FOMC Meetings Is/are