23. Letter by hand either with black or white ink as the case demands.
RE-SIDING
Many books which have been rebound with leather backs come to the binding department with the cloth sides badly frayed at the corners or edges. If the sewing is good and the book is clean, it is worth while to put on new sides.
1. Remove cloth sides and smooth off the inside of the board with a dull knife.
2. Cut two pieces of cloth a little larger than the sides.
3. Glue the inner surface of the cloth and place on the book, turning in the corners as described in 15 on page 187.
4. Put book in the press.
5. After book is dry, paste a single end paper over the inside of each cover.
REINFORCING
In Chapter 6 will be found a discussion of the advisability of purchasing books bound from the sheets or in reinforced publisher's covers. While it is advisable on the whole to have reinforcing done by regular library binders, the work can be done in large libraries that have proper equipment and labor. The essential principles of reinforcing are the same in all libraries that practice it, though they may differ as to minor details. The following method has proved satisfactory.