This document discusses the history and development of plastics from 1770 to 1964. It describes how early plastics like horn, rubber, and celluloid were used to make tools, household goods, and other objects starting in the late 18th century. These early plastics were often formulated to imitate other natural materials like wood, bone, and ivory. The use of plastics grew in the late 19th and early 20th centuries with new materials like ebonite and urea-formaldehyde. By the 1930s, plastics like urea-formaldehyde cups no longer tried to mimic other materials and were simply appreciated for being plastic.