The SciencesOctober 20, 1917
The Making of a 6-Inch Reflecting Telescope—III
Instructions for the Amateur Instrument Builder
Stories by C. J. Larson
The SciencesOctober 13, 1917
The Making of a Six-inch Reflecting Telescope—II
Instructions for the Amateur Instrument Builder
The SciencesOctober 6, 1917
The Making of a 6-inch Reflecting Telescope—I
Instructions for the Amateur Instrument Builder