A systematic survey of how ancient writings have been preserved and identified, examining materials and scripts, the practices and locales of copyists, and the evolution of handwriting; it outlines tools for dating and authenticating texts, including linguistic evidence, citations by later authors, and independent corroboration from archaeology and inscriptions. The narrative follows the survival and recovery of manuscripts through the medieval decline and the later revival of learning, formulates general principles of historical proof, compares the evidential weight of religious documents with other ancient records, and illustrates methods through case studies such as Herodotus and notable museum holdings.