Another book I bought is Who's Had Who, which purports to be a carefully researched tome on the subject of, well, you read the title. If half the stuff I've read is true, then people have been a lot busier than I thought. How did Elvis ever have time to record any songs?
The book's copyright date is 1990, and I can't begin to imagine what's been going on between then and now. It's probably best not to think about it.