Paper enclosures are opaque and block light. They are also porous and help prevent the accumulation of moisture and gases. However, viewing is more difficult since you must remove the item from the enclosure before you can see it. Handling can cause harmful fingerprinting and other damage. Suggestion: Use paper when items don’t require frequent viewing. Select non-acidic paper enclosures that are of archival quality. Use buffered storage enclosures for cellulose-nitrate and early safety-film negatives, brittle prints, and prints on brittle acidic mounts. Use non-buffered enclosures for color images, black and white prints, cyanotypes, or albumen prints.