A few weeks ago, I was thinking about something and the phrase, “the hostess with the mostest” popped into my head. People used this saying to describe Perle Mesta who was well known in Washington for her parties and social events. She also raised large sums of money for Harry Truman in 1948. 
Googling Mesta, I realized that she was appointed Ambassador to Luxembourg during the Truman administration. Ambassadorships are often rewards for fundraising. Her appointment in 1949 made her the third women to become a minister to a country. Because of Google, Wikipedia, and the internet, idle curiosity can send you down many rabbit holes. In the case of Perle Mesta, I went in two directions.
One was to explore the musical film done in the 1950’s about Mesta. The film was an adaptation of a Broadway show. Both had the title, “Call Me Madam” To this day, one way of addressing a female ambassador is as “Madam Ambassador.” I was able to get a DVD of the film and watched it last week. It starred Ethel Merman and a noticeably young Donald O’Connor.
Of course, there was romance, princesses, and a lot of other silliness. There were also a lot of insider jokes about Margaret Truman, the daughter of Bess and Harry who was an author. The movie was very dated but fun to watch because Merman is a force of nature, and the music was by Irving Berlin.
The other topic that interested me in thinking about female ambassadors was to find out who was the first female ambassador and when that happened. The honor went to Eugenie Anderson who received her post to Denmark in the same year as Mesta.
In the early drafts of Dames, Dishes, and Degrees, I wrote about Lucy Benson, who during the Carter administration was the top-ranking female State Department official. Today 33 % of American ambassadors are women. As far as I know, a musical has not been made about any of them.