RT @HistAstro: ‘Transparencies of the Moon’ @LickObservatory, c. 1896; glass plate photograph @nypl. https://t.co/BjbzXt7yY2
RT @HistAstro: ‘Transparencies of the Moon’ @LickObservatory, c. 1896; glass plate photograph @nypl. https://t.co/BjbzXt7yY2