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Hubble, Edwin, Edwin Hubble to V. M. Slipher, November 2, 1928, on results of observing station trip, 1928-11-02

Hubble describes how he had to finish up in Arizona unexpectedly but the best results were the observations from the Grand Canyon and Cameron,…

Tags: California Institute of Technology, Edwin Hubble, observing station, travel, V.M. Slipher