This manual of histopathological technique by Giovanni Montaldo, published in 1959, offers a detailed guide to laboratory methods in tissue processing and microscopic diagnosis. Aimed at medical students, laboratory technicians, and pathologists, it covers fixation, embedding, staining procedures, and slide preparation. Emphasizing practical application, the manual reflects the technical standards and diagnostic tools of mid-20th-century histopathology, serving as both a training resource and a historical reference for understanding laboratory practice in medical diagnostics.