Who invented baseball? For decades it was believed to be Civil War General Abner Doubleday.

Is Multnomah Falls in Oregon the place where a young girl intentionally sacrificed her life by jumping off a cliff?

Martha Washington was a first among firsts, being the first First Lady of the United States.

In 1915, the Panama Pacific International Exposition in San Francisco was held, celebrating the completion of the Panama Canal.

In 1929, the lightbulb had only been around for 50 years. To commemorate what could arguably be one of the top inventions in human history, this stamp was issued.

This is not a stamp. At least not the kind used for mailing letters. It’s a duck hunting license issued by the federal government in 1961.

This beautiful postage stamp is over 150 years old. The stamp was issued in 1869 commemorating the signing of the Declaration of Independence in 1776.

This postage stamp was issued over 135 years ago in 1887. It features a side profile bust of the first President of the United States, George Washington.

This postage stamp is over 120 years old. It was released at the Pan American Expo in 1901.

This postage stamp is over 120 years old and was issued in 1898 at the Trans Mississippi Expo in Omaha, Nebraska.