San Francisco was once pretty much a giant sand dune. We've even heard it said that the very name derives from the once common epithet "sands-can-drift-so", but we're pretty sure that this tale is apocryphal. Okay, we're positive, but a sunny weekend of wandering through Golden Gate Park prompted us to drift back to those early, sandier days. Golden Gate Park was established in 1868, and a local newspaper described it as a "dreary......