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Handwritten copy of "A mere coincidence".

Handwritten and mimeographed copy of "A note on the circles of Pappus".

Two copies of the work "A special property of the shoemaker's knife of Archimedes", drafts of "The shoemaker's knife of Archimedes" beginning "The recent publication of a reprint...", as well as mimeographed copies of: "The shoemaker's knife of Archimedes", Order of Magnitude, Pasadena City College, May 12, 1938; "The shoemaker's knife of Archimedes"; "The shoemaker's knife of Archimedes", Math Council, Pasadena City College, November 21, 1955.

Subseries consists of Leon Bankoff manuscript material primarily regarding the arbelos of Archimedes.

Handwritten notebooks regarding the arbelos of Archimedes.

Handwritten material regarding arbelos as well as L'éducation mathématique, 57e année, no. 20 (July 15, 1955), with handwritten annotation on the cover.

Handwritten arbelos notes.

Handwritten notebooks regarding the Casey problems and some information regarding "The golden arbelos" article.

Handwritten notebook regarding an article about arbelos.

Correspondence regarding the arbelos of Archimedes, primarily between Leon Bankoff and the following individuals: Robert Stanley Beard; Jules Honyoux; Unidentified individual; Robert C. Yates; Jekuthiel Ginsburg, editor, Scripta Mathematica; William L. Schaaf; Howard Eves; Leo Sauvé; Emory R. Starke, American Mathematical Monthly; Cristine West, secretary, Occidental Mathematics Club; Charles W. Trigg [to Paul H. Daus]. File also includes bibliographical references, solutions, and article by Martin Gardner titled "Mathematical games".