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Georgetown University Seismological Observatory installs only Galitzin horizontal seismographs on this side of the Atlantic. The only one of their type on this side of the Atlantic Ocean, the Galitzin Horizontal seismographs have just been installed at the Georgetown University Seismological Observa
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Georgetown University Seismological Observatory installs only Galitzin horizontal seismographs on this side of the Atlantic. The only one of their type on this side of the Atlantic Ocean, the Galitzin Horizontal seismographs have just been installed at the Georgetown University Seismological Observa

Harris & Ewing · 1929-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

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united statesglass negatives
Credit lineGeorgetown University Seismological Observatory installs only Galitzin horizontal seismographs on this side of the Atlantic. The only one of their type on this side of the Atlantic Ocean, the Galitzin. 1929-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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