I've never shared this story with anyone, so the BY sounds like the place.
On August 29, 1969 I attended a concert here in NYC at the Singer Bowl on the old World's Fair grounds across from Shea Stadium. The band I went to see came on after Larry Coryell played (I think. It could've been Buddy Guy). This band said they'd just flown in from London finishing up their 2nd album, which hadn't been released yet. They said it would be their pleasure to perform the songs from that album. This is the song they opened with.
During their version of "Moby Dick" Bonham was so drunk he fell unconscious off of his stool. Plant came to the mic and said, "Is there a doctor in the house"?