A selection of drawings and sketches from out collection:
Drawing of preparing the polisher (pouring the pitch lap), no date, R. W. Porter. Gift from Alan Mackintosh.
Drawing of Polar Reflecting Telescope, Port Clyde, Maine, 8x6 inches, R. W. Porter, July, 1914.
Pencil drawing of men viewing biplane with Garden Telescope, R. W. Porter.
“Porterian Reflecting Telescope,” blueprint of design for a turret telescope by R. W. Porter, April, 1920.
Photo of R. W. Porter with the Garden Telescopes at the Jones and Lamson Machine Tool Company, Springfield, Vermont.
Color Photo of Walter Scott Houston (1912-1993).
“Bismark Asleep, Ast. Observatory, July 29, 1905,” 14x10 inches, drawing, R. W. Porter.
200-Inch Dome Palomar Mt., pencil and chalk, 1939, 17x17 inches, R. W. Porter.
Drawing depicting how the knife-edge produces shadows, 1936, 12x8 inches, R. W. Porter. Gift from Miriam Houston, 1995.
Procedure for making a roof prism, likely dating from World War II, as Porter led a nation-wide effort to make roof prisms for the war.
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