There are many factual claims in the book, most of which are cited in the end notes at the back of the book. They’re numbered by page and identified by a key phrase. There are, however, some claims for which additional discussion or elaboration might be in order. I have sought to provide this in a spreadsheet, with tabs for each chapter.
On page 21, the last quiz item answers the wrong question. The number of honorary degrees awarded Maya Angelou is 22.