Facts and Analysis of America's Billionaires
The World's Richest Person at Every Age
Who are the Black billionaires?
The 50 richest people on the planet
Real Time Billionaires
Top 10 Richest People in the World (1995-2021)
How many billionaires were there in the USA in 1960? - Quora
2012 was a very good year—for the world's billionaires
The roster of billionaire NFL owners who rule football - Los Angeles Times
The World's Richest Person at Every Age
Animated Chart of the Day: World's Top 10 Billionaires, 2000 to 2022
The richest person in the world every decade from 1820 to 2020