"Opening the ZipperZ: SFist". SFist - San Francisco News, Restaurants, Events, & Sports. 2008-11-20. Archived from the original on 2023-07-11. Retrieved 2023-07-11.
"Opening the ZipperZ: SFist". SFist - San Francisco News, Restaurants, Events, & Sports. 2008-11-20. Archived from the original on 2023-07-11. Retrieved 2023-07-11.