Ключевые слова: aged, ancient, antique, background, book, books, business, chain, concept, confidential, cover, culture, data, day, diary, document, education, history, home, key, knowledge, library, literature, lock, locked, locks, note, object, office, old, padlock, page, paper, pile, protection, retro, safety, secret, security, symbol, table, texture, vintage, white, wisdom, wooden,