This US presidential campaign poster for William McKinley and Theodore Roosevelt dates back to 1900 and highlights one of McKinley's campaign pillars: the gold standard. This monetary system connects the value of currency to a set amount of gold, meaning a person can exchange paper currency for the precious metal.

The US Gold Standard Act was approved on March 14, 1900. Some rival politicians at the time also wanted silver as part of the country's currency system, which led to heated debates. McKinley and his support of the gold standard won out with his successful bid for reelection.

The US is no longer on the gold standard, thanks to President Franklin D. Roosevelt's move to cut the ties between the US dollar and gold in 1933 to help stimulate the economy during the Great Depression.