Featured International Astronomical Union Commission 28. Nebulae Report Correspondence. Slipher, V.M. 1922

Featured Percival Lowell Purdy, J.E. (James Edward) 1904

Featured Drawings of Jupiter, 1917-1918 Slipher, E. C. 1917-1918

Featured V.M. Slipher and E.C Slipher Unknown 1930 ca.

Featured Color drawing of Mars, 1905 Lowell, Percival 1905