An exhibit of astronaut Neil Armstrong's personal papers is opening at Purdue University ahead of the 50th anniversary of his famed walk on the moon.
"Apollo 11 in the Archives: Selections from the Neil A. Armstrong Papers" opens Monday at Purdue's Humanities, Social Science, and Education Library and runs until Aug. 16.
Purdue is home to hundreds of thousands of personal documents, memorabilia and photos from the 1955 Purdue graduate's life.
That includes about 70,000 pages of fan mail Armstrong received after he became the first human to walk on the moon on July 20, 1969.
The Ohio native made his famous walk after he manually landed the Apollo 11 lander to avoid a large lunar crater that could have doomed the mission.
Armstrong died in 2012 at age 82.