Resources in Early American History

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1	Author:	Freehauff, Daniel.	Requires cookie*
	Title:	Astronomical calculations, 1778, 1779
	Dates:	1778-1779
	Abstract:	These two volumes contain astronomical calculations for two eclipses observed in Philadelphia, one in 1778, the other in 1779. In addition to the data and calculations, the volumes contain detailed essays of how to make such calculations. View finding aid for a full description
	Call #:	Mss.523.78.F87c
	Extent:	2 volume(s)
	Topics:	Science and technology
	Genre:	Manuscript Essays \| Scientific Data
	Subjects:	Astronomy. \| Eclipses.

2	Author:	Spencer, Nathan.	Requires cookie*
	Title:	Nathan Spencer's account of Godfrey, 1809
	Dates:	1809
	Abstract:	This volume contains an essay, apparently written by Pennsylvania farmer Nathan Spencer, about Thomas Godfrey. There are also copies of James Logan's correspondence. Some believe Godfrey invented the quadrant, and Spencer's biography argues this point. Spencer also claims to live on the same farm that Godfrey had owned. View finding aid for a full description
	Call #:	Mss.B.G54s
	Extent:	1 volume(s)
	Topics:	Science and technology
	Genre:	Manuscript Essays
	Subjects:	Astronomy. \| Hydrographic surveying. \| Navigation. \| Quadrant.

3	Author:	Anonymous	Requires cookie*
	Title:	Scientific copybook, [n.d.]
	Dates:	Circa 19th c.
	Abstract:	This scientific copybook is like a commonplace book. It has various essays on a range of scientifc topics. The essays had been printed in various journals that were then copied in manuscript form in this notebook. Some entries note the source from which they were copied. The partially filled notebook was likely compiled sometime in the early nineteenth century. View finding aid for a full description
	Call #:	Mss.500.Cop79
	Extent:	1 volume(s)
	Topics:	Science and technology
	Genre:	Commonplace Book \| Educational Material \| Manuscript Essays \| Notebooks \| Scientific Data
	Subjects:	Astronomy. \| Natural history. \| Zoology.

4	Author:	Roberts, Joseph,1793-1835.	Requires cookie*
	Title:	Joseph Roberts philosophical and mathematical papers, 1812-1814
	Dates:	1812-1814
	Abstract:	This collection includes scientific educational material and data from nineteenth century scientist Joseph Roberts. The volumes contain problems, lectures, and notes. View finding aid for a full description
	Call #:	Mss.510.R54
	Extent:	3 volume(s)
	Topics:	Education \| Science and technology
	Genre:	Educational Material \| Manuscript Essays \| Notebooks \| Scientific Data
	Subjects:	Astronomy. \| Mathematics -- Problems, exercises, etc. \| Physics. \| Spherical trigonometry.