by advertising low prices. The firm was able to offer low prices by acting as both the wholesaler and retailer. Gilman also built a nationwide mail order business. By 1866, the firm was valued at more than $1 million. In 1869, the transcontinental railroad was completed; Gilman created a parallel company, the Great Atlantic & Pacific Tea Company, to promote the then-new concept of prepackaged tea under the Thea-Nector name. The tea company, which some sources say was co-founded by George Huntington Hartford, continued to use the Great American name for mail-order purposes. In 1871, A&P introduced another concept when it offered premiums, such as lithographs, china, and glassware with the purchase of coffee and/or tea at its stores. These premiums are now collectibles. 1878–1951: Hartford era Evolution of the grocery store Hartford joined Gilman & Company as a clerk perhaps in the late 1850s; Hartford later was promoted to bookkeeper, then cashier, in 1866. By 1871 Hartford was in a position of authority and was responsible for expanding A&P to Chicago after its great fire. A&P's first store outside New York City was opened just days after the disaster. The firm rapidly expanded; in 1875 A&P had stores in 16 cities. In 1878, Gilman left the active management of the firm to Hartford. By then, the firm operated 70 lavishly-equipped stores and a mail order business with combined annual sales of $1 million. To raise revenue, Congress raised tariffs on tea and coffee. Profits on these products declined; around 1880 A&P started to sell sugar in its stores. The company continued aggressive growth and by 1884 operated stores as far west as Kansas City and as far south as Atlanta. The company also operated wagon routes to serve rural customers. About this time, two of Hartford's sons, George (1864–1957) and John (1872–1951), joined the firm. A&P lore holds that George convinced his father to expand the product line to include A&P-branded baking powder. Over the next decade, the company added other A&P-branded products, such as condensed milk, spices, and butter. As it expanded its offerings, the tea company was gradually creating the first grocery chain. By 1900, the firm had sales of $5 million from 198 stores as well as its mail order and wagon route operations. However, other grocery chains were expanding more rapidly and blanketing their respective areas while the tea company's stores were spread over a