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| The oldest picture | Patent clerk | 1920 | 1912 |
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| 1931 | Radio talk | Barcelona, 1923 | Berlin 1922 |
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| Haberlandstraße Berlin |
Berlin | Santa Barbara, 1933 (1) |
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| Violin, 1929 | Violin, 1941 | Princeton | |
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| Vacation | Sailing | early 1940s | Princeton,1937 |
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| At the blackboard | Princeton | Winter | |
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| The last blackboard | 1947 | 1950 | 1945 |
