The 1920s was a decade like no other: an age of jazz music, new technologies and economic prosperity, immortalised by author F. Scott Fitzgerald in his novel The Great Gatsby.

Outside of popular literature, many real-life tycoons amassed enormous wealth during the so-called Roaring Twenties. Using the first-ever Forbes’ Rich List, published in 1918, read on to discover some of the richest men and women of the era – who’d all be billionaires in today’s money.

All dollar amounts in US dollars and net worths adjusted for inflation.