With the 50th anniversary of the Summer of Love sparking celebrations and events throughout San Francisco, Grace Cathedral welcomes former San Francisco Chronicle senior pop music critic and New York Times best-selling author Joel Selvin as its guest at Grace Cathedral’s “Forum.” Joel will discuss his book, Summer of Love: The Inside Story of LSD, Rock & Roll, Free Love and High Times in the Wild West, and offer his insights into the lasting impact of the 1967 cultural revolution that was born in the Haight-Ashbury.