#TBT: 19th-century #SanFrancisco. But wait: isn't that a car? This is actually one of photographer Binh Danh's images of modern-day #SF (that's @citylightsbooks in #NorthBeach) made using the #daguerreotype technique dating from the 1800s. See more photos at kqed.org #archive #throwbackthursday #vintage #photography