Autograph letter signed "G. B. Airy", Royal Observatory Greenwich, 1845 August 20, to J. G. S. Lefevre: having seen Mr. Addington (the Foreign Office Secretary) two days ago, "on my mentioning the passport he immediately arranged for sending me one. I hope that you found a copy of my Eclipse paper on your table." Airy was Astronomer Royal (1835–81) and set the Greenwich prime meridian. Condition: folds, toning.
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