Jerry Seinfeld Honors Joan Rivers After Finding "Heartbreaking" Text

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Two weeks before her death, the late star agreed to be on Seinfeld's web series

Jerry Seinfeld is paying tribute to Joan Rivers after finding an August text message informing him she'd agreed to appear on Comedians in Cars Getting Coffee.

"I just came across this heartbreaking text on my phone from August 19th. I had asked Joan Rivers to be our lead guest on the new season of Comedians in Cars, and she was thrilled," Seinfeld wrote on the Comedians in Cars Facebook page Monday. "Then we got a call saying she was going in for a medical procedure and needed to postpone."

Seinfeld went on to write how much he was looking forward to having Rivers on his Crackle web series.

"I would have loved to have shown another side of her," he wrote. "I wanted to tell her how much I admire all she had accomplished, especially in the latter stages of her career. She was one of the greats. I'll miss her."

Rivers died Sept. 4. Many others also have paid their respects publicly, including daughter Melissa Rivers, Howard SternTV late night hosts and The View panelists.