Eugene B. Ely lands on the deck of the USS Pennsylvania stationed in San Francisco Bay, the first time an aircraft landed on a ship.

The second USS Pennsylvania (ACR/CA-4), also referred to as Armored Cruiser No. 4, and later renamed Pittsburgh, was a United States Navy armored cruiser, the lead ship of her class. She was originally assigned the name Nebraska but was renamed Pennsylvania on 7 March 1901.

Eugene Burton Ely (October 21, 1886 – October 19, 1911) was an American aviation pioneer, credited with the first shipboard aircraft take off and landing.