At the center of middle-class culture in the 1950s was a growing demand for consumer goods; a result of the postwar prosperity, the increase in variety and availability of consumer products, and television advertising. America generated a steadily growing demand for better automobiles, clothing, appliances, family vacations and higher education. After the initial hurdles of the 1945-48 period were overcome, Americans found themselves flush with cash from wartime work due to there being little to buy for several years. The result was a mass consumer spending spree, with a huge and voracious demand for new homes, cars, and housewares. Increasing numbers enjoyed high wages, larger houses, better schools, more cars and home comforts like vacuum cleaners, washing machines—which were all made for labor-saving and to make housework easier. Inventions familiar in the early 21st century made their first appearance during this era. The live-in maid and cook, common features of middle-class homes at the beginning of the century, were virtually unheard of in the 1950s; only the very rich had servants. Householders enjoyed centrally heated homes with running hot water. New style furniture was bright, cheap, and light, and easy to move around. As noted by John Kenneth Galbraith in 1958: