Cast plaster, life-sized bust of elderly man with curls above each ear. Elaborate drapery around the shoulders. Bust stands on a cast-in cylindrical columnar support. Incised on back of base: "CLINTON" (formerly attributed as De Witt Clinton).

Brass construction. The instrument consists of a plate supported by an L-shaped arm and foot. A thumbscrew on the plate causes a pencil below to describe the figure, through a train of four gears, the last of which carries the pencil at the end of an arm. (Robert P. Multhauf, "Catalogue of Instruments and Models," 1961).

Plaster model labeled "Mont Blanc en relief." Painted green and grey and carrying numbers evidently related to a key which is now lost. (Robert P. Multhauf, "Catalogue of Instruments and Models," 1961).

Three-quarter-length seated figure turned left, head resting on left hand, right hand holding manuscripts. The sitter wears a black coat and waistcoat and a white shirt. There is a red table cloth at lower right, under manuscript. Gray-brown background. Signed: "D. Huntington/1861" on lower right corner.

Brass instrument, with horizontal dial with a 5 3/8" needle and scale from 0 to 110. The needle is mounted on a vertical spindle about 5" long. The spindle is mounted on bearings at top and bottom, the latter being a needle in the center of a mica disc. A fine spiral spring extends over 4" of the spindle, and is attached to it at the bottom and to the frame at the top. The spindle and spring are covered by a brass housing which can be pulled off. Instrument has ill-fitting top which may not be original. Top is inscribed with "S. Homer May 27 1863" and "Samuel Homer Aug 27 1863."

Brass variation transit (magnetometer), in oak box. Instrument has two telescope assemblies.

Brass compass with a variation arc on the north arm, and a level vial on the south arm. Signed "T. Whitney / Maker / Philadelphia" on compass face. The instrument is dated "1814" under socket. It is in its original condition, with the exception of the Jacob's Staff attachment screw, which was added at a later date.

Brass sextant marked "Stancliffe, Maker, Philadelphia." 8" radius. Scaled 0-155, in 1/2 degrees. There are two interchangeable telescopic sights, and the micrometer is read with a microscope. The instrument is boxed and has a leather carrying case. (Robert P. Multhauf, "Catalogue of Instruments and Models," 1961).

Brass sundial with three adjustable legs and two levels attached to the side. Engraved along perimeter of top of compass: "Paris 49 Londres 51 St Petersbourg 59 Madrid 41 Milan 45", along with sundial's numerical position. Engraved on underside of compass: "Lisbonne 42 Constantinople 41 Berlin 52 Vienne 48 Hambourg 53."

Plaster model of a three-dimensional surface. The printed inscription reads, "Model of the magnetic surface presented in the discussion Part II of the magnetic observations made at the Girard College Philadelphia between 1840 and 1845, by Prof. A.D. Bache. Const. and modeled by Ferdinand Engel, Washington, D.C. 1862." A handwritten description reads, "Presented by A.D. Bache." The observations which this model records are described in a 36-page pamphlet published by the Smithsonian Institution in 1863. A note with the model states that Bache intended to make two more models of the horizontal and vertical forces; one of these is now at the Smithsonian.

Nine instruments housed in original wooden case covered in leather or sharkskin. The top of the case is hinged at one side, and held shut by a snap fastening. Inside the top is a printed label: "McAllister & Co./48 Chestnut Street/Philadelphia. Have constantly for sale, cases of/Mathematical Instruments/For Schools, Wholesale & Retail/Dividers, Gunter's Scales, Parallel Rules, Brass and Ivory Protractors, etc. separate from the case." Around the wall of the top is pasted a strip of paper, bearing handwritten inscriptions - "$3 1/4 /N60K/n fli/gfi DW Mr/ No 160-9/str purchd March 18 1847/of McAllister." Contains nine drafting instruments: divider, compass with five attachments, ivory scale, parallel rule, and scaled semicircle.

Coat of Arms of Penn family of Pennsylvania. 1877 plaster cast of original Mason-Dixon 5-mile "Crownstone" line marker from 1763-1767.

Crest of Calvert family of Maryland. 1877 Plaster cast of original Mason-Dixon 5-mile "Crownstone" line marker from 1763-1767.

Brass circular box of 3" diameter, 1 3/4" high, into which is built a sextant. Unmarked.