Alvan Clark 5-in. Refracting Telescope — Naval Oceanography Portal
Alvan Clark & Sons - Wikipedia
Restoration of the 5.0-inch Alvan Clark and Sons Refractor Telescope Used as a "Finder" Telescope on the Steward Observatory 36-inch Telescope on Kitt Peak -- University of Arizona; Lunar and Planetary Lab;
Alvan Clarke 8” refractor from 1878, still in use by Skyscrapers, Inc in RI : r/telescopes
Alvan Clark 24" Refractor (Lowell Observatory) Review
Movers | Nature
The Public "I": A HALL OF MIRRORS
Restoration of the 5.0-inch Alvan Clark and Sons Refractor Telescope Used as a "Finder" Telescope on the Steward Observatory 36-inch Telescope on Kitt Peak -- University of Arizona; Lunar and Planetary Lab;
Rich's Sky Notes: October 24, 2010 #095 - Alvin Clark & Sons Objective Lenses - Part 1
Feedback - Moonraker Telescopes
Alvan Clarke 8” refractor from 1878, still in use by Skyscrapers, Inc in RI : r/telescopes
Alvanclark-leah - Alvan Clark & Sons - Wikipedia | Telescopes, Spaceship interior, Telescope