Vintage Red C. Ropp’s Commercial Calculator Short Cut Arithmetic Pocket Size

Vintage 1931 Ropp's Commercial Calculator. A practical Arithmetic for practical purposes. Contains tables and short, simple and practical methods for rapid calculations. Cover has some fraying but very little. Inside has some writing of the owners name and maybe a date. No other marks have been found inside or outside the book. For its age it’s in pretty amazing condition. 128 printed pages. Written By C. Ropp, published by Laird and Lee, Chicago, Ill. 1869