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Sources and Methods

Sources and Methods presents fresh archival evidence and new insights into contemporary international history.

Photograph of the Soviet cosmonaut Yuri Gagarin at a press conference during his visit to Finland.

Yuri Gagarin & the First Human Spaceflight

Documents selected, curated, and annotated by Asif Siddiqi comprise new Digital Archive collection on Yuri Gagarin, a Soviet cosmonaut who became the first human to travel into space on April 12, 1961.

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