TLS in German, signed “A. Einstein,” one page, 8.5 x 8.5, California Institute of Technology letterhead, February 24, 1931. Untranslated letter to Charles E. St. John, thanking him for making him an honorary member of the University Club of Pasadena. Affixed to a slightly larger cardstock sheet. In very good condition, with intersecting folds (one vertical fold passing through a single letter of the signature), various blocks of toning, and a paperclip mark to the upper left. Accompanied by an unsigned typed statement by St. John on University Club of Pasadena letterhead, January 26, 1931, apologizing for the absence of two professors at an event where Einstein was a special guest, stating that “Both expressed their entire confidence in the experimental grounding of the Theory of Relativity.”
In 1931, Einstein took his first visiting professorship position at Caltech in Pasadena. He was greatly impressed with the research being done at the nearby Mount Wilson Observatory, where astronomers Charles E. St. John and Edwin Hubble had recently discovered the red shift effect and were working towards their conclusion that the universe was expanding. One of the University Club’s most active members, St. John welcomed Einstein to the group, and the physicist honored them with an address at the start of the year. An excellent scientific and intellectual association from Einstein’s time in Pasadena. Pre-certified PSA/DNA.
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