After sorting, the next process is to catalogue or compile an inventory; but it is equally important at this stage to decide how you will properly care for the records. By taking proper care of the archive, future generations will be able to enjoy the records of their heritage.
So how do you preserve the archive? There are basic measures which can be undertaken to extend their life so you will need to systematically work through the records and perform basic preservation tasks. Initially, it is important to carefully remove all damaging fasteners such as staples, paper clips and pins and replace them if absolutely needed with archive quality ones. Rust residue from staples can be reduced or brushed off with a soft brush, but in doing so you need to make sure the paper is not damaged even further.
Archive documents should be cleaned prior to storage because this will extend their useful life. Using a cloth which does not contain chemicals or any other substances that could be left behind, should be used; alternatively use a very soft, wide brush available from an artists' materials shop. A soft brush is always recommended if you are dusting books or a vinyl record collections. If archives are covered with an ingrained or heavy layer of dust, use a vacuum cleaner that has a soft brush attachment. Special heads are recommended available from conservator suppliers.
It is a good idea to remove folded letters or papers from the envelopes. The creases made by folding and unfolding paper records can cause damage and eventually weaken the paper causing the document to fall to pieces. Do not press or force the pages flat although they can be opened and placed in archival quality folders or sleeves. Gently fold back any creased corners beforehand.
If any of your archive has been affected by insect infestation, isolate the items so that the infestation does not spread. Insects can be difficult to eradicate so consult a conservator about valuable or sentimental items that are infested. Don’t attempt to eradicate the infestation yourself unless you know what you are doing.
A major threat to records is mould which can be a health hazard to people too. The first thing to do is to remove the source of moisture or high humidity causing the mould. If possible, make a copy or replace the item, and in any case consult a conservator to treat any that cannot be replaced. Conservators have the equipment and materials to treat mould successfully. Cleaned materials should be perfectly safe to handle. Once cleaned, store the items in an environment where the humidity is less than sixty per cent and monitor this regularly.
One of the biggest problems with photographs is that they may have been kept before in one of the dreadful sticky page albums which were available in the 1970s/80s. And photos which are colour prints form the one-hour photo processing systems don't always last. Remove all photos from these albums if possible. The adhesive can become very sticky over time making it difficult to remove the photos; adhesive also stains the photo. If the photos are difficult to remove and appear really stuck to the album page, try using dental floss to remove them but don’t used the waxed variety as that will also stick to the album page.
The other problem with photographs and colour slides is that the colour fades or develops a blue tinge which is almost impossible to restore. The best way of doing so is to create a high-quality digital image and then using software such as Photoshop, you can adjust the colours accordingly. Upon scanning you can also retouch scuffs, scratches and spot staining. The original photograph can be safely stored in inert folders so the ink doesn't continue to fade, but at least there is also a better copy in the archive. However, modern inkjet printer ink also fades over time so this is not a permanent solution to the problem. Older documents and photographs sometimes turn yellow, another process which cannot be reversed. Again scan and digitally retouch the document. Avoid storing slides in wooden slide boxes as this will accelerate the deterioration through lignin migration.
Cellulose adhesive tape is also a problem. Many people use double-sided tape to stick documents or pictures in scrapbooks or onto sheets of paper. This over time leaves an immovable brown stain in the paper. There is no safe and easy way to remove tape from your documents so you need to consult a conservator. Trying to remove the tape can also cause further damage but often the tape has broken down so it is no longer holding a document in place but the stains of the adhesive remain ingrained into the paper. The best thing to do is scan the original so you don't lose the information.
Torn and dog-eared papers with creases or missing parts can be repaired using Japanese tissue which is strong and has archival qualities. In some cases other bookbinding products may need to be used. Most documents in such a condition can be repaired by a professional conservator or bookbinder. Until that is possible, carefully store the pieces together in an archive inert sleeve through which you can still read the information.