KODAK CIRCULAR PRINTS/ CYANOTYPES:

If more than one print is housed in a folder, place acid-free sheets of paper between each print. House similar sized items together. Acid-free boxes add additional protection for photographic collections. Atmospheric pollutants, chiefly pollutants that may attract mold or insects, in addition to light, heat, and humidity can cause print deterioration.

Store in a cool, dry dark area where temperature and humidity do not fluctuate. Ideal temperatures are 65° - 68° F and 40%-50% RH