William Hart, Driving Force Behind the Delfonics, Dies at 77 - The

Thom Bell, an architect of 1970s Philadelphia soul, dies

William Hart Dead: The Delfonics Singer Dies at 77 – Billboard

Bill Hart - IMDb

Delfonics Lead Singer William 'Poogie' Hart Dead at 77

Notable Deaths of 2022: Music - The New York Times

Daily Grindhouse [IN MEMORIAM] A MOMENT FOR ALL THOSE WE LOST IN 2022 - Daily Grindhouse

William Hart, Lead Singer of The Delfonics, Dead at 77

Delfonics leader William Hart dies; How a whirlwind of history killed his group's best chance to hit No. 1 in 1968

William Hart, Lead Singer of The Delfonics, Dead at 77