Group of sun spots and veiled spots, observed on June 17th, 1875, at 7h. 30m. A.M

General information about the Popular and Applied Graphic Art print materials is available at: loc.gov
Title information compiled by Junior Fellows, 2005-2017.
Charles Scribner's Sons, copyright claimant.
Trouvelot, E. L., designer.
Category designation on original folder: Astronomical.
Product advertised: Prints.