Field's fortune, conservatively estimated at $100,000,000, yet, in fact, reaching about $140,000,000, was largely bequeathed to his two grandsons, Marshall Field III., and Henry Field. Marshall Field, as did many other multimillionaires of his period, welded his fortune into a compact and vested institution. It ceased to be a personal attribute, and became a thing, an inert mass of money, a corporate entity. This he did by creating, by the terms of his will, a trust of his fortune for the two boys. The provisions of the will set forth that $72,000,000 was to set aside in trust for Marshall III., until the year 1954. At the expiration of that period it, together with its accumulation, was to be turned over to him. To the other grandson, Henry, $48,000,000 was bequeathed under the same conditions. These sums are not in money, although at all times Field had a snug sum of cash stowed away; when he died he had about $4,500,000 in banks. The fortune that he left was principally in the form of real estate and bonds and stocks. These constituted a far more effective cumulative agency than money. They were, and are, inexorable mortgages on the labor of millions of workers, men, women and children, of all occupations. By this simple screed, called a will, embodying one man's capricious indulgence, these boys, utterly incompetent even to grasp the magnitude of the fortune owned by them, and incapable of exercising the glimmerings of management, were given legal, binding power over a mass of people for generations. Patterson says that in the Field stores and Pullman factories fifty thousand people work for these boys.[187] But these are the direct employees; as we have seen, Field owned bonds and stock in more than one hundred and fifty industrial, railroad, mining and other corporations. The workers of all these toil for the Field boys.