Apr 13, - These secret bars in New York, Los Angeles, San Francisco, and more that operated on Bourbon & Branch's grounds during Prohibition. Jan 30, - Prohibition and speakeasies in the US. Detroit police inspecting equipment found in a clandestine brewery during the Prohibition era. A policeman with wrecked automobile and confiscated moonshine, Removal of liquor during Prohibition. Prohibition-era prescription for whiskey.