Complex sentence: The first was Lena Springs, who was not a public official and whose 1924 nomination was a gesture of affection and the second was India Edwards in 1952, whose nomination was also a gesture of gratitude for her influence over Harry Truman.
Split into simpler sentences: The first was Lena Springs, who was not a public official and whose 1924 nomination was a gesture of affection. The second was India Edwards in 1952, whose nomination was also a gesture of gratitude for her influence over Harry Truman.