Manufacturers Hanover owned many buildings, such as one at Eighth Avenue and 43rd Street (now the Second Stage), another at Broadway and 44th Street, and another at Park Avenue and 48th Street. "Manny Hanny" also sponsored several sports events and made itself a visible part of the city for many years.
19 October 1968, New York Times, pg. 54:
Over the last 156 years, the Manufacturers Hanover Trust Company and its predecessors have been a major factor on the New York financial scene. But it was only yesterday that the $9.6-billion bank finally braced itself to appear before the New York Society of Security Analysts and tell all about its business.
For a neophyte, the "Manny Hanny" did remarkably well.
No one who worked at Manufacturers called it Manny Hanny. At least not in the International Division. That was considered declasse. We ALWAYS referred to it as MHT. Manny Hanny was for our competitors. . . .or those in the branches.