The Porter garden telescope.

The Porter garden telescope.
[Springfield, Vt.] : Springfield Telescope Makers, Inc., [n.d., 1999?]
1 v. (various pagings) : ill., facsims. ; 28 cm.
Other Authors: 
Porter, Russell Williams, 1871-1949. Garden telescope.
Spaight, John Tracy. Porter garden telescope.
Scanlon, Leo J. (Leo John), 1903-1999. Porter garden telescope.
Springfield Telescope Makers, Inc.
Jones & Lamson Machine Company. Porter garden telescope.
Jones & Lamson Machine Company. Setting up directions for the Porter garden telescope.
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Spiral bound.
"From the archives of The Springfield Telescope Makers, Inc."
This item was received as part of the Mark Pendergrast research collection.
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] ([4] 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].