1988

• Jan - Mount Wilson Hotel after the Blizzard of 1907
• Feb - Assembling the 100-inch Telescope, 1917
• Mar - Mt. San Antonio (Old Baldy)
• Apr - Night Sky View from Mount Wilson
• May - Silvering the 100-inch Mirror
• Jun - The Hale Solar Laboratory
• Jul - Aerial View of Mount Wilson
• Aug - The 100-inch Telescope Clock Drive
• Sep - Aerial View of Pasadena and Mount Wilson
• Oct - The 60-inch Telescope Dome and the Solar Towers
• Nov - The 100-inch Hooker Telescope
• Dec - The 60-inch Telescope

• Jan - Einstein Visits Mount Wilson
• Feb - Solar Tower Telescopes after Snowfall
• Mar - Inspection Tour, 1907
• Apr - Harvard Telescope One Hundred Years Ago
• May - Staff Photograph, 1905
• Jun - George Ellery Hale
• Jul - The 100-inch Mirror Arrives on Mount Wilson
• Aug - Visitors' Night on the 60-inch Telescope
• Sep - Construction of the 100-inch Telescope, 1916
• Oct - Pease at the 50-foor Interferometer
• Nov - Hubble at the 100-inch Hooker Telescope
• Dec - The Largest Telescope in the World, 1908-1917

• Jan - Einstein Visits Mount Wilson, 1931
• Feb - Snowfall Atop Mount Wilson, 1917
• Mar - Polar Axis of the 60-inch Telescope
• Apr - Abbot's Solar Building, 1905
• May - Snow Telescope and Solar Towers, 1911
• Jun - Erecting the Dome of the Hale Solar Lab
• Jul - Dome of the 100-inch at Night, 1950
• Aug - Two Men and Two Mules, 1904
• Sep - Construction of the 60-inch Dome, 1908
• Oct - Cepheid Variables Discovered in Andromeda Galaxy
• Nov - Hale and Ellerman
• Dec - Construction of the 100-inch Telescope, 1916

• Vol I, #2 - Hale at MWO, June 1903
• Vol I, #2 - Horsepower in 1904
• Vol I, #2 - Snow Telescope Coelostat Mirror
• Vol I, #2 - Snow Horizontal Telescope
• Vol II, #1 - Carnegie and Hale, 1910
• Vol II, #1 - The 60-inch mirror blank
• Vol II, #1 - Bringing the 60-inch up to MWO in 1908
• Vol II, #1 - The Hale and Carnegie Families