Career landmark: Perkins Professorship of Astronomy and Mathematics (1842–1880).
Text from Wikipedia, available under CC BY-SA 4.0.
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Career landmark: Perkins Professorship of Astronomy and Mathematics (1842–1880).
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-19 from Wikipedia. The archived copy is preserved so this citation survives link rot.