Tree thumbnailPhotographs produced from 1890 to 1940 likely have cellulose nitrate, a dangerous material that poses a threat to the collections around it.

Cellulose nitrate can cause photographs to combust at relatively low and naturally obtainable temperatures if in a certain stage of deterioration.

This leaflet shows how to identify photographs containing cellulose nitrate and how to recognize the various stages of deterioration.

Measures are provided for storage and reproduction of photographs at each stage of deterioration.

Technical Leaflet #169 (1989)

For more information on similar topics, please refer to Technical Leaflet Bundle 15, Collections Management II.