Joe
I know, that picture has more of a downtown feeling than if you were to snap the same one today. The building is still there, but it's offices now, and with a brick facade exterior. The Roos Atkins building underwent a similar re-purposing.
As I recall, the boiler blew in Thrifty's basement, which was shared with Penney's. I remember Penney's re-opened after extensive repairs, but long before Thrifty, which was where the bulk of the carnage took place.
Based on the VW bus, that photo was taken several years after the incident.
My Aunt worked in the First National Bank building directly across the street. She had stories about the scene in the days following the blast. Gee, now that I think of it, the FNB is the building that started it all with the facelifts on that corner in the very early '60s. There's a Walgreens instead of a bank on the ground floor now. Bank of the West bailed out of there quite some time ago, and S.J. State University bought the building.