The next year, Franklin wrote a letter to Black Panther Party Minister of Culture Emory Douglas, expressing her regret that due to timing issues, she couldn't appear at a fundraiser for the Oakland-headquartered organization. "I love what you are doing in the community, and I am looking forward to meeting all of you," she wrote.

“I am also gratified that you thought enough to write and let me know your feelings, as once in a while one feels so inadequate in this business and wonders if people really feel we have talent or not and if that talent brings a smile or so from those we try to reach.”

Davis told The Nation this week that Franklin was among her most high-profile supporters. "Her bold public call for justice in my case helped in a major way to consolidate the international campaign for my freedom,” Davis said.

just found this mind blowingly humble letter from Aretha Franklin to Emory Douglas, Minster of Culture for Culture of the Black Panther Party while doing some archival digging: “Once in a while one feels so inadequate in this business” pic.twitter.com/tGh7FXTMxT — your friend jeff (@muttgomery) August 13, 2018

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Franklin's connection to the Bay Area was also cemented in her concert appearances over the decades.

As a teenager in the 1950s, Franklin performed at the Oakland Civic Auditorium (later named for industrialist Henry J. Kaiser) as part of a gospel revue led by her father. The event, promoted by Mel Reid of Reid's Records in Berkeley, yielded her classic recording, "Precious Lord, Parts 1 and 2." In 1967, after making her San Francisco debut at the Jazz Workshop in North Beach, she returned to the Oakland Civic Auditorium as a headliner near the height of her secular stardom.

(Franklin has a plaque on the West Oakland Blues of Walk of Fame commemorating artists who performed on 7th Street, but in a 2015 interview with the Oakland Post, she claimed she never played Esther's Orbit Room, as some have said.)

In 1971, storied promoter Bill Graham brought her to his Fillmore West in San Francisco for three nights, a recording of which was released on Atlantic Records that year as Live at Fillmore West. Album highlights include her crossover covers of Simon & Garfunkel and Beatles, done as stomping, gospel-tinged funk, and a 19-minute duet, "Spirit in the Dark," with surprise guest Ray Charles.

Franklin performed several times at the Circle Star Theater in Santa Clara, but between the years 1978 and 2014, a fear of flying kept Franklin from performing in the Bay Area entirely. She finally returned after nearly four decades for a concert at the Oracle Arena.