San Francisco (sans-serif typeface) and iOS 10 is a new variant named "SF Compact Rounded". It is used in the new contact placeholder icons introduced in the OSes. The "SF Serif" variant was showcased during the keynote at WWDC 2018 on June 4, 2018 when the all-new Apple Books app was introduced. This variant is exclusive to Apple Books in iOS 12 and macOS Mojave, is not mentioned in Apple's Typography design guidelines, and is not publicly downloadable like other variants of the San Francisco typeface. Since its introduction, San Francisco has gradually replaced most of Apple's other typefaces on their software and hardware
StreetArt: The Punk Poster in San Francisco 1977–1981 StreetArt: The Punk Poster in San Francisco 1977–1981 StreetArt: The Punk Poster in San Francisco 1977–1981 by Peter Belsito, Bob Davis and Marian Kester, and published by Last Gasp, was the first published effort to attempt to document the punk rock poster in the U.S. The book was inspired by an exhibition of punk rock posters curated by Peter Belsito, Susan Pedrick and Bob Davis at Valencia Tool & Die mounted during the Western Front Punk Festival held in San Francisco in October 1980. The artwork was found on the streets of San Francisco, put there with the intent to