sentences:  The official membership of the IHS includes approximately 4,500 households across the United States.The IHS's collections, accessible online through the society's website and at the William Henry Smith Memorial Library, is one of the largest archival repositories of material on the history of Indiana and the Old Northwest.The collection is composed of 1.7 million photographs (615 visual collections), 45,000 cataloged printed items (books, pamphlets, etc.