How to store materials used for machine identification

What to take away

• Keep the paper after scanning it. Digital files fail in ways paper does not.
• One folder per machine, named for maker, model and serial, holding everything.
• Copying a manual for your own reference is not the same as publishing it.
• Wet, moldy or infested paper is the one situation that needs action the same day.

The folder system

One physical folder and one digital folder per machine, with matching names. Inside each:

• The twelve-frame photograph set, numbered.
• Transcriptions of every mark, exactly as written.
• The six measurements.
• The manual and parts diagram, or a note of where they live.
• Purchase details, seller's description, and any correspondence.
• The written finding, dated, with its confidence level.
• A log of every change made to the machine afterwards.

Name files so they sort themselves: serial, frame number, date. Anything relying on you remembering a shorthand will be unreadable in two years.

Keep the two folders in step. The commonest failure is a digital folder that grows while the paper one stagnates, so that half the evidence exists only in one place and nobody knows which half.

Storing the paper

Old manuals, dealer leaflets and parts lists are exactly the kind of material archives handle daily, and the standard answers apply. The National Archives collects them in its general guidance for family archives, which addresses what to do about wet records, insects and mold, how photographic prints should be stored, whether to digitize a collection, and whether originals can be discarded afterwards.

The short version for a machine file: store flat, not rolled or folded along existing creases; keep it out of light; do not laminate anything; remove metal paperclips and rubber bands; and do not throw the original away once you have a scan.

Scanning without damage

Use a flatbed only for loose sheets that fit entirely on the glass, because a lid closing on an oversized sheet creases it. For stapled booklets use a copy stand or a phone on a tripod with the booklet supported open rather than pressed flat. Scan at a resolution that keeps a parts diagram's smallest reference number readable when enlarged.

Then back the files up somewhere that is not the same device. A machine file that exists only on one phone is one dropped phone from being lost.

Save in a common format rather than whatever an app defaults to. Plain image files and searchable documents will still open in twenty years; a proprietary notebook format may not, and the whole point of the exercise is a record that outlasts your current habits.

What you may copy, and what you may share

Making a scan of a manual you own for your own reference is a different act from putting it on a public site. The Copyright Office sets out the framework in Copyright Basics, covering what works are protected, who owns the rights, and how long protection lasts.

The practical guidance for a collector is straightforward: scan for yourself, link rather than republish, ask before posting somebody else's scan, and do not assume that an undated leaflet is free simply because it looks old.

Reviewing the file

Open each machine folder once a year. Check the paper for damp and insects, confirm the backups still open, and re-read the finding to see whether new evidence has arrived. The reasoning it records is set out in our identification pillar, and the drill that produces a first finding is in the weekend practice plan.

Common questions

Should I keep the seller's listing? Yes. Screenshot it at purchase. Listings vanish and their claims matter later.

Are plastic sleeves safe for old paper? Inert polyester sleeves are fine. Soft flexible vinyl is not.

How long should I keep the file after selling the machine? Keep a copy. Buyers come back with questions years later.

What if the manual is falling apart? Support it, scan it, and store the pieces flat in one enclosure. Do not tape it.