No cause of death was provided, but Anderson had suffered health issues in recent years and her former band mate Jack Casady said she recently entered a hospice facility, reported Rolling Stone.
Anderson's death came the same day as her former band mate Kantner, who passed away on January 28 from multiple organ failure and septic shock.
Following news of Anderson's death, the surviving founding members of Jefferson Airplane paid tribute to their one-time singer.
"One sweet lady has passed on. I imagine that she and Paul woke up in heaven and said 'Hey what are you doing here? Let's start a band' and no sooner then said Spencer was there joining in!," Marty Balin wrote on Facebook, referring to the band's late drummer Spencer Dryden. "Heartfelt thoughts to all their family and loved ones."
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Anderson appeared on the band's debut album Jefferson Airplane Takes Off, singing lead on that LP's "Chauffeur Blues" and featuring prominently on their version of "Let's Get Together," the Chet Powers-penned track that became a hit for the Youngbloods the next year.
Just as Jefferson Airplane was ascending, Anderson gave birth to her first child. Realizing that life on the road with a newborn was unfeasible, Anderson opted to part ways with Jefferson Airplane in 1966.