"From the archives of The Springfield Telescope Makers, Inc."
This item was received as part of the Pendergrast Archive.
United States patent, December 6, 1927 --
The Porter garden telescope / Jones & Lamson Machine Company (15 p., c1923) --
Setting up directions for the Porter garden telescope / [Jones & Lamson Machine Company] ( p., Form 24-200) --
The garden telescope : an account by its inventor of a new garden accessory / by Russell W. Porter (reprinted from House Beautiful, March 1923) --
Why confine your vision? [advertisement] (House Beautiful, May 1923, p. 579) --
The Porter garden telescope [advertisement] (Country Life, March 1924, p. 109) --
Porter drawing (date unknown) --
The Porter garden telescope / John Tracy Spaight (from Rittenhouse, v. 6, no. 4 (issue 24), Aug. 1992, pp. 97-102) --
The Porter garden telescope: ancestor of the 200-inch telescope / Leo J. Scanlon (from Modern Astronomy, July/August 1974, pp. 62-65) --
On the track of Porter garden telescopes, updated November 16, 1999 [inventory of existing garden telescopes].