Wisconsin State Law Library, located in Madison WI, is the oldest library in the state. Established in 1836, it has been serving the Wisconsin Supreme Court and the entire state of Wisconsin ever since. As the judicial branch's integral part, it caters to the legal information needs of officers of the court, government employees, attorneys, and the public.

Their comprehensive collection includes books, eBooks, articles, journals, Wisconsin law, federal law, tribal law, other states' law, and international law. They also provide various services such as legal research guides, classes, tours, and tutorials. In addition, patrons can ask a librarian for assistance, order documents, borrow materials by mail, and utilize the library's computers and internet facilities.

The Wisconsin State Law Library has three main locations: the David T. Prosser Jr. State Law Library in downtown Madison, the Milwaukee County Law Library in the Milwaukee County Courthouse, and the Dane County Law Library in the Dane County Courthouse.

Open during regular business hours, the library is committed to ensuring equal access to the law by offering expert assistance and maintaining a vast collection of legal resources