H. Bert Mack founded the Mack Company, serving as chairman of the board until his death in 1992. In the 1960s, he bought thousands of acres of undeveloped land in the
New Jersey Meadowlands and built warehouses and office buildings on it. who had a $600,000 investment in the purchase. In 1997, Mack's sons merged the Mack Company with the Cali Realty Corporation (co-founded by Edward Leshowitz and brothers
John J. Cali and Angelo R. Cali) creating
Mack-Cali Realty Corporation, the largest office-property owner in New Jersey. Mack's sons (
David,
Earle, William, and Fredric) all became directors of the new entity. ==Philanthropy==