Transparent papers require specific chemical and physical properties, such as translucency, smoothness, and whiteness, which are produced by specially formulated compositions and manufacturing procedures. Unfortunately, these special formulations render such papers exceptionally susceptible to damage (surface marring, embedded grime, and stains) and degradation (discoloration and embrittlement), while also making them particularly reactive to moisture and solvents that must be used in conservation treatments to correct these problems. To evaluate the effects of water and organic solvents on such papers, several research projects were designed to consider the variables of paper composition, properties, type of solvent and technique of application of solvent.