" which was still a 1950s model with a surprisingly literate feel" I find that 50s/60s shows are far more expecting of the audience to know references to literature and history; even the "smart" shows these days may as well be OW MY BALLS from Idiocracy.

Great episode, but the classic Bilko ep. is the one where a chimp has been accidentally drafted and Bilko has to be his lawyer in the court martial trial.