By 1919 growth was fast. In response, Simmons acquired manufacturing plants in San Francisco, California; Los Angeles, California; Montreal, Quebec; Toronto, Ontario; Winnipeg, Manitoba; Vancouver, British Columbia; Elizabeth, New Jersey; Seattle, Washington; and Atlanta, Georgia. The following year, Simmons started a new sales arrangement. Instead of purchasing a mattress directly off the retail floor, customers could test the product on in-store samples, order a mattress through the retailer, and receive direct delivery within the next 24 hours from one of Simmons' 64 warehouses. This arrangement reduced the need for retailers to own and store their own product inventories. In 1923, Simmons moved its corporate headquarters to New York City.