Consists of manuscripts of complete lectures and notes used as guides to lectures created by Brown University faculty for use in Brown University classes and in extension classes. The faculty and academic subjects taught, listed with inclusive dates of the lecture materials, that are represented in the collection include: Solomon Drowne, materia medica and botany, ca. 1814-1827 (in addition to lecture manuscripts, the materials of Solomon Drowne include an address to a society for the physical sciences); Rohn Truell, applied mathematics, optics, physics, 1955-1961; Alva Woods, mathematics and natural philosophy, ca. 1823-1833. The mathematics and natural philosophy lectures of Alva Woods include the topics of optics, hydraulics, hydrostatics, aerostatics, pneumatics, electricity, astronomy, physics and mechanics, and the philosophy of language.