Tribal Mask. Seen On the Street By WestbyMidwest on October 19, 2015 Location: Lilac and Cypress Alleys @ 24th St in San Francisco, Ca Artist: Bruce Hallman. Photographer: west by Midwest Tags: Bruce Hallman, San Francisco, SF - Mission - Cypress Alley, SF - Mission - Lilac Alley, SF - Mission District, Stickers