Upton Sinclair was a muckraking author whose influential works exposed industrial and socio-political injustices.
John Brown was an American abolitionist who advocated for armed insurrection to end slavery, leading a raid on the Harpers Ferry armory in 1859.
George Calvert was an English nobleman, politician, and founding proprietor of the Province of Maryland in Colonial America.
Lewis Cass was an American politician and diplomat who served as the Secretary of War and a prominent leader in the Democratic Party during the mid-19th century.
Louis D. Brandeis was an American jurist, advocate for social justice, and Associate Justice of the Supreme Court, who significantly influenced progressive legal thought and policy.
Samuel Gompers was an American labor leader instrumental in founding the American Federation of Labor, advocating for workers' rights and better working conditions.