Treatment and Stabilization of Historical Books number 407 through 431 to be preserved, restored, mylar and boxed. Volumes are to be examined prior to treatment and control numbered as necessary. Volumes aer then to be dismantled, removing all remnants of previous binding and adhesive. Previous repairs to be removed, insofar as possible without additional damage or degradation. Volumes are to be dacidified by appropriate methods after testing for solubility of inks. In the case of aqueous deacidification with magnesium bicarbonate solution, books are to be pre-washed several times in distilled water, and then deacified in a solution of magnesium bicarbonate titrated to 19. In the case of soluble inks another deacidification will be used. Tears, cracks, voids and other losses are to be mended with either Japanese tissue and archival adhesive, or LC archival tissue. After deacidification and repair, volume pages are to be encapsulated in archival quality polyester film of 3 mil thickness, and sealed on three of four sides. Capsules are to have a minimum 1” margin on binding edge so that they may be converted to loose leaf format at a later time at the option of the County. After encapsulation volumes are to be placed in archival boxes.
