William H. Navin

American Bar Association provides legal services. It provides law school accreditation, continuing legal education, legal information and other services to assist legal professionals. The firm has members which include judges, court administrators, law professors, and non-practicing attorneys. The company was founded on August 21, 1878 and is headquartered in Chicago, IL.

The Illinois State Bar Association is a state bar association that serves lawyers. The association is based in Springfield, IL. The association provides various resources for lawyers, including legal forms, expert services, and publications. It also offers continuing legal education programs and hosts events for lawyers.

The Chicago Bar Association is a voluntary membership organization consisting largely of lawyers and judges from Cook County and the state of Illinois. The private company is based in Chicago, IL and has subsidiaries in the United States. The association works to establish and maintain the honor and dignity of the profession of law, promote the welfare of its members, and improve the effectiveness and efficiency of the administration of justice. Founded in 1874, it is one of the oldest and most active metropolitan bar associations in the United States.

The Options Clearing Corp. provides equity derivatives clearing services. It provides central counterparty clearing and settlement services to stock exchanges and trading platforms for options, financial futures, security futures and securities lending transactions. The company was founded in 1973 and is headquartered in Chicago, IL.