One eagle is worth ten dollars
Michael X. Watman · The Arithmetic Teacher · 1971
Charity book sales often deliver to the casual peruser some gems of antiquity for little mo re than pocket change. Between the covers of stacks of faded-yellow National Geograplric magazines, within the countless mystery yarns of yesterday, and among last year's best sellers lie insights unimagined by their authors. No type of book is ric her in its commentary than the outdated mathematics textbook! Before your burgeoning disbelief causes you to flip the page, let me cite two examples from my collection of attic-library rejects