Yarrow died at his home in New York City after a four-year battle with bladder cancer ... written by Yarrow and Stookey, as well as Bob Dylan classics such as "The Times They Are a-Changin ...

He had bladder cancer, his publicist confirmed ... has undergone a revival of interest thanks to the Bob Dylan biopic, A Complete Unknown. After Mary Travers died in 2009, the trio's co-writer ...