Trade literature making advertising claims, give instructions in using products, provide testimonials from satisfied customers, and include detailed descriptions of sale products. Trade catalogs first appeared in the 18th century, with the expansion in trade, commerce and consumption. The distinguished English cabinet maker, Thomas Chippendale published a book of his designs in 1754, entitled "The Gentleman and Cabinet Maker's Director" and regarded as the "first comprehensive trade catalogue of its kind". The designs were regarded as reflecting the current London fashion for furniture, and set the standard for his competitors in the market. Chippendale followed this up with a virtual reprint in
Cabriole leg in about the year 1750 with the advent of Chippendale furniture design; while Chippendale chairs adopted the cabriole leg, the leg design became more delicate than those of the Queen Anne Style. American designs arose by the mid-18th century, imitating the English Queen Anne Style and borrowing elements from all three sub-periods of its development in England: Queen Anne period (1702–1714), George I period (1714–1727) and George II period (1727–1760). To demonstrate the central role of the cabriole leg in this period of American furniture, this period "has frequently been called the cabriole period, and this is no misnomer, since