Description: On January 24, 1925, for the first time in over a century, a total solar eclipse would be visible across the northern part of the United States. How scientists used a dirigible to observe the phenomenon.
Description: [caption id="" align="alignleft" width="219" caption="Unidentified Washington, DC Church, 1919, by Martin A. Gruber, Black-and-white photographic print, Smithsonian Institution Archives, Martin A. Gruber Photograph Collection, 1919-1924, RU007355."][/caption] Recently the Smithsonian Institution Archives posted some images from the Martin A. Gruber Photograph Collection,