Beneath a period lithograph of a John Polaroid, the inventor of "instant" photography, the following caption appears: Mr.Polaroid, pictured here demonstrating to a n enraptured audience(not shown)the development procedure of one's photograph, which entailed remaining absolutely motionless for 74 minutes after one had shot the confounded thing, only to discover that one's trouser fly buttons were undone at the time of exposure.
