Which storage guideline is correct for photographic materials?

• A. Store on edge and never flat
• B. Store on flat surfaces only
• C. Store in direct sunlight
• D. Store with metal objects inside the cabinet

Answer: (A)

Photographs are sensitive to physical pressure, humidity, and light, so long-term preservation relies on minimizing stress on the image surface. Storing on edge keeps the prints upright, distributing weight along the edge rather than pressing across the emulsion. This reduces curling, bending, and surface pressure that can develop when flat stacks are stored for extended periods. In contrast, storing flat can promote curling and create pressure points, especially with changes in humidity. Avoid direct sunlight because UV light fades and damages images, and avoid metal objects in the cabinet since corrosion or staining can transfer to the materials. So storing on edge follows a safer, artifact-friendly practice for photographic materials.