In an earlier post I discussed the secret ghost signs of San Francisco - those quirks of geography or post earthquake development that are best viewed using Google Earth or similar satellite mapping software. It turns out that much like the ghost sign map in general, my understanding of San Francisco’s secret ghost signs is also evolving because I’ve recently found more of them. Not only did I find a potential Omar Cigarettes sign on 825 Bush, but I’ve found some equally interesting secret signs on 555 Eddy.