The circulating collection of the Center is housed in the Congressman Frank J. Guarini Library. This piece of the collection is located on the third floor in the Juvenile Collection. Books in the circulating collection which are part of the Weiss Center collection have bookplates identifying them as donations. These books have been donated by publishers, Dr. Weiss, or by friends and relatives of Dr. Weiss in his name.
The reference (non-circulating) part of the collection consists of autographed books (children's, young adult and adult). These books are located in Special Collections on the first floor of the library. Like the Weiss Center books which are in the circulating collection, these books have bookplates designating them as donations.