Ropp\'s Commercial Calculator Book Copyright 1887 Tables for Rapid Calculations For Sale

This vintage calculator book by Ropp offers a unique opportunity to own a piece of history. With copyright dating back to 1887, this booklet contains tables for rapid calculations that were used over a century ago. The book was manufactured in the United States and falls under the "Pre-1920" time period. It is a valuable collectible item that belongs to the "Collectibles" and "Paper" categories.

The title, "Ropp's Commercial Calculator Book" is self-explanatory and accurately describes the contents of the booklet. It is a great addition to any collection or can be used as a reference for those interested in the history of this particular field. As an example the book lists the then known planets in the solar system. It doesn’t mention Pluto which was not discovered until 1930.