In saloons with the double doors with a gap in the bottom and top how did bartenders keep their liquor and drinks secure at night after closing? Or are the doors more of a Hollywood thing.

This was asked a while ago and answered here by /u/itsallfolklore. This isn't meant to discourage questions or further answers.

The short answer is that if they had small swinging doors they would have a full sized lockable door that would close over them after hours.