In this 1969 episode, Oliver mentions the Hong Kong Flu pandemic which in 1968 thru 1969 killed somewhere between 1-3 million people globally.
Ralph's full name is Ralph Waldo Monroe, a take on the name of the 19th century philosopher/poet Ralph Waldo Emerson. Hank's full name is Henry Wadsworth Kimball, also a take on a19th century poet: Henry Wadsworth Longfellow.
Mr. Douglas jokingly suggests Ralph's good news is that she's 4F, an obsolete military conscription designation that when applied to a person exempted that person from military service for reasons of infirmity, physical or mental health issues. Military conscription in the U.S. only applied to males between the ages of 18 and 45 and was only in effect until 1973, so Mr. Douglas' remark would resonate with the TV viewing audience when this episode originally aired.
Haney offers Lisa her a choice of Tabernacle Choirs: the one from Salt Lake City or Stankwell Falls. He recommends Stankwell Falls since their bass section is better.
Sam Drucker says this is the 295th ceremony he's conducted since becoming a Justice of the Peace.