By Matthew Reitman / May 23, 2016 2:30 pm

Last month, the U.S. Treasury Department added women and civil rights leaders to various denominations of American currency. But did you know that Harriet Tubman wasn’t the first woman to be featured on an American bill? That title belongs to Martha Washington. From noteworthy to the obscure, below are a list of the forgotten historical figures that graced U.S. currency.

Running Antelope, leader of the Hunkpapa (National Numismatic Collection at the Smithsonian Institution) Salmon Chase, President Lincoln’s Treasury Secretary (National Numismatic Collection at the Smithsonian Institution) Philip Sheridan, Commanding General of the U.S. Army from 1853-88 (National Numismatic Collection at the Smithsonian Institution) Samuel Morse and Robert Fulton, inventors (National Numismatic Collection at the Smithsonian Institution) Martha Washington, wife of first US President (National Numismatic Collection at the Smithsonian Institution)