Badge worn by Alice Stone Blackwell as a delegate to the League of Women Voters 3rd Annual Convention and Pan-American Conference of Women held in Baltimore, Maryland April 20-30, 1922.
In 1920 the National American Woman Suffrage Association became the League of Women Voters with Carrie Chapman Catt as its first president. It was formed to help educate newly enfranchised women.
Alice Stone Blackwell was the daughter of Lucy Stone and an avid women’s rights advocate in her own right. She assumed editorship of the Woman’s Journal, a leading women’s political journal from 1870 to 1931, when her father, co-founder of the periodical with her mother, passed away (Stone Blackwell's editorship lasted from 1909-1917).
Extending the sides of polygons can produce a variety of complex polyhedra, including this one. It has twelve relatively sharp points, each with five triangular edges converging. These points alone would form a twelve-pointed star that is itself a stellation of the icosahedron. In addition, there are twenty three-sided points—not as sharp. These faces alone are like those of a great stellated dodecahedron. Wenninger refers to this model as the thirteenth stellation of the icosidodecahedron.
The model is cut and folded from paper. Wheeler assigned it the number 371, and classified it as icosahedron I10. He also pointed out that the inner faces could be considered as parts of five intersecting tetrahedra.
A related model (304723.204) is dated 1919, hence the approximate date assigned to this model.
References:
Magnus J. Wenninger, Polyhedron Models, Cambridge: The University Press, 1971, p. 55, 73, 88.
A. H. Wheeler, Catalog of Models, A. H. Wheeler Papers, Mathematics Collections, National Museum of American History.
Rectangular kettle with a flat, inset cover topped by a flattened knop and a mushroom-shaped, flat-strap handle with tubular grip and heart-shaped terminals riveted to the sloped shoulder. Cast, S curve spout with split lip is soft-soldered to the folded vertical seam. Body has one large hole at spout; its shoulder and flat bottom are attached with folded edges. No marks.
Miniature cast iron skillet on three legs. Circular bowl with rounded bottom, sitting on three tapered legs. Thin, tapered handle on one side, flattened on top. No mark.
This German silver instrument has a 6-1/2" arm with tracer point and 6-1/2" pole arm. The arm lengths are fixed. The tracer arm and pole arm are connected by a hinge and form a circle around the white plastic measuring wheel, vernier, and registering dial when the instrument is closed. The pole weight is missing. The top of the tracer arm is marked in script: J. Amsler. A serial number is marked underneath the tracer arm and the weight: 67925.
A wooden case is covered with black leather. The corner of a label attached to the bottom of the case is missing. The remaining part reads: SA ROSENHAIN (/) S. Bento, 60 – S. Paulo (/) [illegible] 2. 260$. The symbol has two vertical lines to denote the Brazilian real. The distributor was probably Casa Rosenhain, an importer operated by a German firm, Schmidt & Company, and located adjacent to the Rua São Bento park in São Paulo in the early 20th century. The donor, Sebastian J. Tralongo (1928–2007), served in the U.S. Navy during World War II and then worked for the Vitro Corporation in Rockville, Md., for 35 years. He patented a device for signaling from deeply submerged submarines and assigned the rights to Vitro. He did not report how he came to own a planimeter sold in Brazil.
This instrument is in the design invented by Jacob Amsler (1823–1912) and made by the workshop he founded in Switzerland. The material, rounded hinge, and presence of a registering dial indicate this is a Type 2 of the six versions manufactured by Amsler.(Around 1910 Amsler's firm added a registering dial to the Type 1, but began to make that version from brass instead of German silver.) The serial number and the signature, which the firm began to use after Amsler's death, indicate that this planimeter is significantly younger than MA.318485. Unlike that instrument, the arms on this object are equal in length. Planimeter expert Joachim Fischer dated this object to about 1925. For more information on Amsler, see 1987.0107.10.
According to the accession file, this instrument was received at the Smithsonian in 1984,
References: "Enemy Trading List Issued by the War Trade Board," Official [U.S.] Bulletin 1, no. 176 (December 5, 1917): 11; "Tralongo, Sebastian James 'Subby'," Hartford Courant, May 26, 2007; Sebastian J. Tralongo, "Submarine Signal Device" (U.S. Patent 2,989,024 issued June 20, 1961); "Vitro Corp. – Company Profile," http://www.referenceforbusiness.com/history2/25/Vitro-Corp.html; Crosby Steam Gage & Valve Co. Catalogue (Boston, 1888), 104–109; Joachim Fischer to Peggy A. Kidwell, October 19, 1992, Mathematics Collection files, National Museum of American History.
Pencil sketch of Mickey Mouse’s steamboat wheel. This cel was used in the creation of the 1928 short film Steamboat Willie. This cartoon is a landmark in the history of animation because it was the first Mickey Mouse film released as well as the first cartoon with synchronized sound.
Pencil sketch of Mickey Mouse holding onto a rope. This drawing was used in the creation of the 1928 short film Steamboat Willie. This cartoon is a landmark in the history of animation because it was the first Mickey Mouse film released as well as the first cartoon with synchronized sound.
Pencil sketch of Mickey Mouse slipping on a bar of soap. This drawing was used in the creation of the 1928 short film Steamboat Willie. This cartoon is a landmark in the history of animation because it was the first Mickey Mouse film released as well as the first cartoon with synchronized sound.
This cut and folded tan paper model is one of several in which A. Harry Wheeler illustrated properties of polar spherical triangles. A sticker on it reads: PTb*. One polar triangle is inside the other. The vertices of the outer triangle are labeled A, B, and C. The vertices of the inner triangle are labeled A2, B2, and C2. The model has no Wheeler number. It also is marked: See STRIA(1)2
For a discussion of polar triangles, see MA.304723.159.