"after eminent historical figures"

 Abraham Lincoln was the 16th president of the United States, serving from March 1861, until his assassination in 1865.

Josephine de Beauharnais married Napolean Bonaparte in 1796 and was crowned Empress of France in 1804.

 Marie Curie (1867-1934), a Polish chemist and physicist, was the first person to be awarded two Nobel prizes, and her research into the theory of radioactivity is considered a major contribution to the scientific world.

Sojourner Truth (1797-1883) was the chosen name of women's rights activist and abolitionist Isabella Baumfree.