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5Published 1950, May.“…In Sequoia National Park, California.…”
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8Published (Ca. 1927)“…In Palo Alto, California, USA. Original in possession of Heiner Becker.…”
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9Published (Ca. 1927)“…In Palo Alto, California, USA. Original in possession of Heiner Becker.…”
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10Published 1916, April 2.“…At the top of Mt. Tamalpais, California. From: Goldman archive XXII.…”
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11Published (Ca. 1927)“…In Palo Alto, California, USA. Original in possession of Heiner Becker.…”
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12Published 20.02.1957IMAGE
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14“…Nielsen in Palo Alto, California.…”
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15Published 1968IMAGE
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