The Use of the Word "Mantissa" in Mathematics. Signed by Charles Grove. Ralph C. Coxhead Corporation Vari-Typer

Very Good; see scans nd description. New York: Ralph C. Coxhead Corporation, undated but circa 1950. "The Use of the Word 'Mantissa' in Mathematics" , signed by on the cover by author Charles C. Grove, A.M., Ph. D.of the City of New York School of Business and Civic Administration. Octavo, printed staple-bound wraps, 6 pp. Very Good; two modest fold creases at cover, and medium age-toning to the paper. See scans. An explanatory text, detailing the use of the word 'Mantissa" in mathematics, in some depth. Published in part as a promotion by the Ralph C. Coxhead Corporation, inventors of the (then) new "Vari-Typer", an expanded typewriter capable of output in hundreds of type styles and sizes (there was no such thing at the time, of course, as word processors). See scan of the rear-cover ad for that. Very scarce vintage genre pamphlet, signed. Lsmph3.