Emperor Norton wrote many — possibly even most — of his Proclamations during his regular afternoon visits to the Mechanics' Institute at 31 Post Street, where he also is said to have played a fine game of chess. Here's a look at how the Institute featured in the Emperor's daily life, illustrated by a couple of photographs of the building — including a wonderful shot by the pioneering photographer Eadweard Muybridge (1830-1904), who also took the famous 1869 photo of the Emperor astride a bicycle.