Second ladies and gentlemen of the United States in the context of Garret Hobart

Thelma Catherine "Pat" Nixon (née Ryan; March 16, 1912 – June 22, 1993) was First Lady of the United States from 1969 to 1974 as the wife of President Richard Nixon. She also served as the second lady of the United States from 1953 to 1961 when her husband was vice president.

Born in Ely, Nevada, she grew up with her two brothers in Artesia, California, graduating from Excelsior Union High School in Norwalk, California, in 1929. She attended Fullerton Junior College and later the University of Southern California. She paid for her schooling by working multiple jobs, including pharmacy manager, typist, radiographer, and retail clerk. In 1940, she married lawyer Richard Nixon and they had two daughters, Tricia and Julie. Dubbed the "Nixon team", Richard and Pat Nixon campaigned together in his successful congressional campaigns of 1946 and 1948. Richard Nixon was elected vice president in 1952 alongside General Dwight D. Eisenhower, whereupon Pat became second lady. Pat Nixon did much to add substance to the role, insisting on visiting schools, orphanages, hospitals, and village markets as she undertook many missions of goodwill across the world.

United States presidential inaugural balls are large social gatherings, both white tie and black tie, held to celebrate the commencement of a new term of the president of the United States. Planned and sanctioned by the Presidential Inaugural Committee, the official inaugural balls occur throughout the evening of Inauguration Day in the Washington D.C. area and are invitation-only, attended by guests who are issued pre-paid tickets. The president, first lady, vice president, and second lady or gentleman all make personal appearances at each of the inaugural balls held in their honor. Catered food, beverages, and live entertainment performed by national and globally acclaimed musicians are provided at the inaugural balls.

Other inaugural balls, unofficial and often less formal, also occur before and on Inauguration Day, being given by state societies, businesses, and private organizations.

Joan Mondale (née Adams; August 8, 1930 – February 3, 2014) was the second lady of the United States from 1977 until 1981 as the wife of Walter Mondale, the 42nd vice president of the United States. She was an artist and author and served on the boards of several organizations. For her promotion of the arts, she was affectionately dubbed Joan of Art.