This Essay challenges a central narrative in the history of Anglo- American business by questioning the importance of the corporate form. The Essay shows that the corporate form was not, as we have long believed, the exclusive historical source of powers such as limited liability, entity shielding, tradable shares, and legal personhood in litigation. These powers were also available throughout modern history through a little-studied, but enormously important, device known as the common law trust. The trust was widely and very effectively used to hold the property of unincorporated partnerships and associations in England and the United States both long before and long after the passage of general incorporation statutes in the mid-nineteenth...