The William Augustus Brewer bookplate collection comprises 12,870 printed bookplates dating primarily from the eighteenth, nineteenth, and twentieth centuries, many of which were from the libraries of famous individuals or produced by significant artists. The collection also contains additional material relating to Brewer's collection, including Mrs. Augusta LaMotte Brewer's address book and printing plates and blocks, as well as reference material relating to bookplates.

Book of hours, probably for the Use of Noyon.

This mid-eighteenth century physician’s notebook, most likely English in origin, contains medicinal and food receipts, prescriptions, and contemporary treatments for several common illnesses.

Philadelphia, Pennsylvania, resident W. O. George’s nineteenth century manuscript volume comprises approximately fifty pages of handwritten medicinal recipes. These recipes employ chemical (rather than herbal) means for their cures.

This nineteenth-century American manuscript contains approximately eighty-five pages of medicinal formulae and household receipts along with notes and sketches of plants and their medicinal properties. The volume dates from approximately 1861 to 1877 and may have been created by a Philadelphia, Pennsylvania, resident with a medical or scientific background.

Delaware chemist Dr. Frank W. Tober's collection of leaves from manuscripts and from early printed books. It includes pages from books printed in England, France, Germany, Italy, and Switzerland and that date from the fifteenth, sixteenth, and seventeenth centuries. The manuscript pages in the collection include specimens in Latin, German, Arabic, and Indian.