So, I can't tell you where I learned this.
Many books were written about Sinatra by people who were close to him.
The last one I read was written by one of his managers.
I was a member of the Sinatra Society back in the 1980s.
Members went to his concerts and recorded them on cassette recorders and you could buy copies.
Sinatra went along with this.
They weren't of very good quality.
We saw him twice and I got the recordings of them.
Sinatra had many recordings and videos and they are now available on the internet.
I doubt if there will ever be an end to Sinatra's popularity.
As of late, I've become greatly fascinated by Buffett.
I think he could end up being as popular as Sinatra, and maybe more so since he did so many different things.