For clerks, recorders, archivists, records managers and the volunteers who look after the paper trail of daily life.
Deeds, plats, birth and marriage registers, council minutes: the records that prove who owns what and who was born where are still, in most towns, bound volumes on a shelf. Heat, damp, handling, old tape and acidic paper wear them down a little every year. The Ledger is written by people who have worked those shelves – clerks, a conservator, a digitization lead, a records consultant and a local archivist – and it explains, plainly, how to keep the originals readable and the copies trustworthy.
It depends on what it is written on – and on how it is kept. Rough orders of magnitude, assuming good storage:
Centuries
for well-made rag or permanent paper kept cool, dry and dark. Acidic wood-pulp paper needs help much sooner.
LE-500
the life-expectancy rating of polyester silver-gelatin microfilm stored to extended-term conditions.
5–10 yrs
a sensible refresh cycle for digital storage media. Files outlive their disks only when someone migrates them.
What handwritten text recognition can do for old records: OCR vs HTR, training on a clerk's hand, keyword spotting, ground truth, privacy and project planning.
A practical checklist for monitoring temperature and humidity in a records vault, with logger placement, dehumidifier advice and how to read the logger graph.
How a small historical society handles attic donations: the first talk, appraisal, deeds of gift, provenance, accessioning, rehousing and saying no kindly.
Choosing preservation file formats: TIFF masters, PDF/A parts, JPEG 2000, PNG, CSV and XML, audio and video, plus checksums, fixity and migration planning.
A model policy memo for official email: when a message is a record, retention by role, personal accounts and texts, records requests, legal holds and export.
Phasing a records preservation program over a decade: condition survey, priority scoring, annual tranches, recording-fee funds, grants and board reports.
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