N. W. Ayer & Son was the first advertising agency in the United States, founded in Philadelphia, Pennsylvania in 1869. N.W. Ayer was responsible for some of the most enduring slogans in advertising history, including:
"When it rains it pours", advertising salt for Morton Salt, coined in 1912
In 1973, the company relocated to New York, New York. Following a general trend in the advertising industry, N.W. Ayer was subject to a number of mergers and acquisitions and was eventually acquired by the Publicis Groupe (based in Paris, France), which closed down the N.W. Ayer offices in 2002.
See also
The NW Ayer Philadelphia building located at 210 W Washington Sq, Philadelphia, PA 19106 was purchased in 2005 and has been developed into The Ayer a luxury condominium by Goldenberg Group, a real estate development company based in Blue Bell PA, and Brown Hill Development.