Denny Doherty, one-quarter of the 1960s folk-rock group the Mamas and the Papas, known for their soaring harmony on hits like "California Dreamin"' and "Monday, Monday," died Friday at 66.

The Mamas & the Papas singer was known for her wit, her voice and her skill as a connector. For 50 years, a rumor has overshadowed her legacy. Credit...Michael Putland/Getty Images Supported by By ...