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1by Boyd, Louise Arner, 1887-1972“... and his family. In background on extreme right can be seen the seismographic and wireless station. Photo...”
Published 1931
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2by Boyd, Louise Arner, 1887-1972“... of the photo: The cemetery of the Danish Settlement. In the background on the hill is the seismographic...”
Published 1931
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3by Boyd, Louise Arner, 1887-1972“... is residence of the Dane in charge of the seismographic and wireless station. The house on the righ...”
Published 1931
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4by Bowman, Isaiah, 1878-1950“... Geographical Society, May 8, 1925" regarding specimens from the Central Andes; letters requesting seismographs...”
Published 1923
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