The Lady Aberdeen Library on the History of Women, known as the Lady Aberdeen Collection, was donated to the University of Waterloo Library in 1967 by the National Council of Women of Canada to mark the occasion of the Centennial of Canadian Confederation.

In 1954, the National Council of Women of Canada's Arts and Letters Committee began to assemble a library of material by and about women. Named in honour of Lady Aberdeen, the founder and first president of the National Council of Women, the collection grew to include not only books, but also periodicals, government documents, pamphlets, clippings, manuscripts, ephemera, and realia. The collection is particularly strong in literary and biographical works by and about Council members.