By A Mystery Man Writer
The Me and Bobby McGee singer
The Me and Bobby McGee singer's siblings are believed to have earned more from theirs sister's music since her death than she did while she was alive.
How much money did Janis Joplin earn? - Quora
Janis Joplin KLVZ - Denver, CO (Crawford Broadcasting)
A $550 Million Springsteen Deal? It's Glory Days for Catalog Sales. - The New York Times
Janis Joplin's fortune and royalties – where did it all go? ?, Celebrity News, Showbiz & TV
Janis Joplin Net Worth
Reviving Janis Joplin 40 Years After Her Death - The New York Times
The Semi-Reluctant Rock Star – Texas Monthly
Janis Joplin - Wikipedia
Kubernik: The 2020 Legacy of Janis Joplin – Music Connection Magazine
Janis Joplin Net Worth