How to moon a cat a cats and curios mystery

Since her Uncle Oscar passed away and left Rebecca his odd little antique shop specializing in Gold Rush history, her cat Rupert has sniffed out several tightly wrapped bundles of cash that Oscar had apparently hidden throughout his apartment. But now Rupert has turned up something else -- a dusty green vase with a toy bear inside holding a tiny paper flag that reads "Nevada City." Rebecca assumes that this is just another of Oscar's infamous clu...