cyclopedia of the most useful information can be written in a single
volume? The “Britannica” has twenty-five volumes. The “International”
fifteen. Here is needed the faculty of condensation. Use facts only, and
you will be surprised to find how many articles consist only of words.
Make use of the great cyclopedias, the newspaper almanacs, government
reports, and all books in which knowledge is condensed. Pack the book
full of the things the millions want to know.