Hello Jon, Are the ledgers currently in any kind of protective box of any sort? For long term storage, having them in acid-free, low-lignin boxes is always a good idea. They're not cheap though, so they may not be suited to your current venture. Library of Congress has some specifications about boxes here: https://urldefense.proofpoint.com/v2/url?u=http-3A__www.loc.gov_preservation_resources_specifications_specs_300-2D323-5F16.pdf&d=DwIFAg&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=b5NZPQUb9_r2rQ3Zd74ATT3aSs9yKyRnJLOhqJvd7fE&m=baQYrxundvOcatCnRce09EJ_r2O7ih34OnCu49UNlDM&s=gErCopam_Frmazb7nwp2z5SFEcgKfDtjoKxifXNl6b4&e= I used to get such boxes from Hollinger Metal Edge: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.hollingermetaledge.com_modules_store_index.html-3Fdept-3D1-26cat-3D349-26cart-3D1518717002588991&d=DwIFAg&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=b5NZPQUb9_r2rQ3Zd74ATT3aSs9yKyRnJLOhqJvd7fE&m=baQYrxundvOcatCnRce09EJ_r2O7ih34OnCu49UNlDM&s=SEgkMxMB1xwznH37yYsiBD6fQWZVsCa6lJeYwUiiTEM&e= These may not be large enough for your ledgers though-- some of those old ones are huge! If you're going to use plastic, I'd recommend stable polyester. Details on that here: https://urldefense.proofpoint.com/v2/url?u=http-3A__www.loc.gov_preservation_resources_specifications_specs_500-2D552-5F16.pdf&d=DwIFAg&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=b5NZPQUb9_r2rQ3Zd74ATT3aSs9yKyRnJLOhqJvd7fE&m=baQYrxundvOcatCnRce09EJ_r2O7ih34OnCu49UNlDM&s=ebbr8VaGP0-K9B9ZNGqtdKbzxVsOCYOZ62l7WWlNH7c&e= Buy some: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.hollingermetaledge.com_modules_store_index.html-3Fdept-3D1082-26cat-3D457-26cart-3D1518717002588991&d=DwIFAg&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=b5NZPQUb9_r2rQ3Zd74ATT3aSs9yKyRnJLOhqJvd7fE&m=baQYrxundvOcatCnRce09EJ_r2O7ih34OnCu49UNlDM&s=3v8iOg-LDU44aX7IXZ2bsn_dBLM29Ni365pXw4NU_Ug&e= Hope this helps, Thanks, Jackie Jacqueline DiOrio 510-987-0385 Lead Records Analyst Information Technology Services University of California Office of the President List archives at http://lists.ufl.edu/archives/recmgmt-l.html Contact [log in to unmask] for assistance To unsubscribe from this list, click the below link. If not already present, place UNSUBSCRIBE RECMGMT-L or UNSUB RECMGMT-L in the body of the message. mailto:[log in to unmask]