New York State still resisted the idea of living trusts as will substitutes when Earl MacNeill wrote "Making the Most of Your Estate," published in 1957. Perhaps the State had mellowed two years later, when Chemical ran this living trust ad.
Scripophily.com hosts a detailed listing of the births, matings and disappearances of New York banks. (Some national history, too.) Turns out 1959 was the year Chemical acquired New York Trust. Ten years later the NY Trust name vanished. Eventually Chemical acquired Chase and assumed the Chase name. Today, the widow's grandchildren would be receiving their trust distributions from JPMorgan.