Cracking open a cold one with the boys was much more complicated in the days of prohibition. In order to get their fill of drinks and dancing, the party animals of the '20s and early '30s headed to speakeasies, where a secret codeword and a card could get you into the wildest ragers in town. 

From dancing patrons to the eyes of the bouncer, here are 20 images from Prohibition-era speakeasies you won't need a password to see.