Hastings-on-Hudson, NY and MA: David & Yola Coffeen and Raymond V. Giordano 1992. First Edition. Pgs 97-128. 8vo. Wraps. Illustrated. A bright clean copy. Near Fine. Staplebound wraps. 
The Porter Garden Telescope by JOHN TRACY SPAIGHT.
Benjamin Condy of Philadelphia. Colonial American Navigational Instrument Maker by SILVIO A. BEDINI.
Physics as a Moral Discipline: Undergraduate Laboratories in the Late Nineteenth Century by DEBORAH JEAN WARNER.
The Rittenhouse Journal of the Scientific Enterprise was a scholarly journal focused on increasing and distributing knowledge about scientific instruments made and/or sold in the US and the Americas. Throughout its 23 years of publication (and a total of 70 issues), the journal covered areas including mathematical, optical and philosophical instruments, chemical, physical and electrical apparatus, sundials and globes; and time periods from the 17th to the mid-20th century. Authors of the various articles in the journal are well known scholars from major institutions, collectors, and dealers in the field of scientific instruments.