Mounting photographs for historical purposes is primarily done to preserve and protect them from damage, such as fading, tearing, and creasing. This helps to ensure that the photographs can be enjoyed by future generations.

Dry mounting is a commonly used method for mounting historical photographs because it is a relatively simple and inexpensive process that does not require the use of chemicals or water. It involves adhering the photograph to a backing board using a heat-activated adhesive.

Dry mounting does not require the use of chemicals or water, which can be harmful to historical photographs. This makes it a safer option for mounting valuable and delicate photographs.

Acid-free cardboard is typically used for dry mounting historical photographs because it is a stable and durable material that does not contain acids that can damage the photographs over time.

The recommended temperature for dry mounting historical photographs is typically around 150°F (66°C). This temperature is high enough to activate the adhesive without damaging the photographs.

The recommended pressing time for dry mounting historical photographs is typically around 1 minute. This allows the adhesive to fully bond with the photograph and the backing board.

A release sheet is used during dry mounting to prevent the photograph from sticking to the heat press. This helps to ensure that the photograph is not damaged during the mounting process.

Mounted historical photographs should be stored in a cool, dry place away from direct sunlight to prevent fading and damage. They should also be stored in a sealed container to protect them from moisture and dust.

The recommended humidity level for storing mounted historical photographs is between 40-50%. This helps to prevent damage to the photographs caused by excessive moisture or dryness.

All of the above are good practices for handling mounted historical photographs. Wearing gloves helps to prevent transferring oils from your hands to the photographs, holding them by the edges avoids touching the surface, and placing them face down on a clean surface helps to protect them from scratches and damage.

The best way to clean mounted historical photographs is to use a soft, dry cloth to gently wipe the surface. Avoid using any harsh chemicals or cleaning solutions, as these can damage the photographs.

If a mounted historical photograph becomes damaged, it is best to take it to a professional conservator. They will be able to assess the damage and determine the best way to repair it without causing further damage.

The best way to display mounted historical photographs is in a frame on a wall. This allows them to be easily viewed and appreciated, and it also helps to protect them from damage.

Proper mounting for historical photographs is important because it helps to preserve and protect the photographs, enhances their aesthetic appeal, and makes them easier to display.