Photographer from the U.S. Naval ObservatorySolar eclipse , observed from the island of Niuafoʻou. Tonga, October 21, 1930. Vintage silver print. Agency stamp and typed caption and date on label pasted on reverse. 15.2 x 20.2 cm U.S. Naval Observatory photographerSolar eclipse, observed from the island of Niuafoʻou. Tonga, October 21, 1930. Vintage gelatin silver print. Press stamp, typed caption and date on a label, mounted on verso. 15.2 x 20.2 cm