These are particularly useful when the person encounters small print during anactivity which makes it inconvenient or difficult to stop and put on reading glasses.As an example, a book mark such as that shown in U.S. Pat. No. 3,140,883 issued to R. L. Anthony on Jul. 14, 1964 may be integrally attached to a book such as a telephone directory or a dictionary, wherein the end of the book mark is pro