The next time you need to buy a ream of paper for
your genealogical research, give serious consideration to the permanence of the
records you’re creating and then reach for acid-free – or even better – 100 percent cotton paper.
But first, let’s take a brief walk
through paper history. If you’ve had the chance to see paper that was made
before the 19th century, you may be pleasantly surprised by how well it's lasted.
From medieval times until the mid-eighteenth century, paper was made with flax
or cotton and sized with gelatin, all relatively stable ingredients.
In 1774, Carl Wilhelm Scheele
(is that name in anyone’s family tree?) discovered chlorine, making it possible
to use bleach-dyed rags for paper. The chlorine reduced the permanence of the
paper, but increased the availability of raw materials to make paper. So paper
became not as expensive, but also not as permanent. The same thing happened in
1806 when alum, a highly acidic sizing, was developed.
The proliferation of high-speed printing
processes for newspapers and books increased the demand for paper. In response,
new and faster methods of making paper were developed. By 1858, the groundwood
process, the ability to grind wood fibers, made paper even cheaper to produce.
Sulphite, a highly acidic sizing, was developed to speed production and
increase profits.
But by the early twentieth century, it
was clear that cheaply made paper was so acidic that the deterioration of books
and newspapers using this paper had imperiled our shared cultural history.
Libraries and archives began to work on ways to mass-deacidify paper. And they
began work on how to avoid the problem altogether.
In 1984, the American National Standards
Institute (ANSI) established
the standard for Permanence of Paper for Publications and Documents in
Libraries and Archives (ANSI Z39.48-1992 rev
2002). The goal of this standard is to reduce future deterioration issues in
printed library materials through establishment of “criteria for coated
and uncoated paper to last several hundred years” under optimal conditions in
libraries and archives.
The next time you’re in the market for a
new ream of paper, you can look for “acid-free” on the label, but there are
various standards for "acid-free" paper,
with differing requirements. In some professions, paper having a pH between 6
and 7 is considered acid-free, but archival and museum conservators consider
7.5 the threshold.
So use the stuff from Staples that’s
labeled “acid-free” for notes and the like. But when you’re ready to print
copies of primary sources or produce trees for family members, use 100% cotton
paper. If you were writing and submitting a dissertation, the university would
require that you use paper of this quality, so why should your genealogical
research deserve anything less?