Celestron - Ambassador 80mm Brass and Mahogany Telescope Celestron
Russel W. Porter beside an 8-inch f/1.0 Schmidt telescope of his design. - Photographs - Huntington Digital Library
The Irving Porter Church Telescope
Porter Garden Telescope - Land8
The Porter Garden Telescope
Stellafane Porter Turret Telescope: How It Works
Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory and a cross-sectional view of the 200-inch telescope, 1938 — Calisphere
Russell W. Porter's Drawings of the 200" Hale Telescope
Porter Garden Telescope | National Museum of American History
History of the Fuertes Observatory Telescope
Porter 14 – Sunriver Nature Center & Observatory
Stellafane Porter Turret Telescope: How It Works
Hale Telescope Looking Northwest Poster, by R. W. Porter – Palomar Observatory Gift and Book Store