Section 1
The problem is retrieval, not supply
Most companies already have far more material than they use. It is in old decks, in a folder from a previous marketing hire, in call recordings, in a testimonial email somebody screenshotted. Nothing is missing. Nothing is findable at the moment of need. That is why a library is worth building and why the first instinct, commissioning new case studies, usually wastes money. Spend the first phase collecting what exists and establishing whether each item is accurate, approved and current. A library of forty items where every one is safe to send beats two hundred where the sender has to guess. The collection sessions themselves often come out of a working format, as [Storytelling Workshops for Your Business: How to Start](/blog/storytelling-workshops-for-your-business-how-to-start) describes.
Section 2
Index by the job, not by the client
Filing by client name matches how the company remembers the work and not how anyone searches. The person looking is trying to answer a question: something for a sceptical finance buyer, something showing we handle a messy migration, something proving we work at this size. So tag by the objection the story answers, the buyer role it suits, the situation it describes, and the stage of the conversation where it fits. Client name and industry are secondary attributes. Get this wrong and the library is technically complete and practically unused, which is the most common outcome.
Section 3
Four fields that make an item usable
Each entry needs an owner, an approval status naming what the client agreed to, a last-verified date, and the source of every number in it. Without the fourth, figures drift as they get retold. Freshness matters as much as accuracy, and stale phrasing has its own cost, which [How to Avoid Overused Clichés in Business Stories](/blog/how-to-avoid-overused-clich-s-in-business-stories) covers.
Section 4
Building the first version
Two weeks, one owner, a shared spreadsheet. Collect what exists, discard anything that cannot be verified or was never approved, and write the survivors to a single short format: situation, what was hard, what was done, what changed, what the client permits you to say. Two hundred words each is enough for retrieval purposes. Then set an expiry. Anything older than eighteen months gets reviewed or retired, because a client who has since changed strategy, been acquired or churned turns a strong story into an awkward question in a live meeting. Expiry is the discipline that separates a library from a graveyard, and it is the part most teams skip.
Section 5
Governance without bureaucracy
One owner, a monthly half-hour review, and a rule that new items enter through the same format. Approval committees kill libraries by making contribution expensive, and then the useful stories stay in people's private folders where they were before. Watch two failure patterns. The first is the library that exists only for marketing, so the sales team keeps its own copies and the versions diverge again. The second is filing everything, including material with no permission attached, which turns a useful asset into a compliance liability. Keep it small and current. Where volume genuinely grows past manual handling, automated classification becomes worth examining, and [Computer Vision Applications for Business Leaders](/blog/computer-vision-applications-for-business-leaders) shows the same trade-off in a different domain.