Includes three letters to his son, Francois André (1783-1801); an act of New Jersey authorizing Michaux to purchase land in the state to establish a botanical garden (1786); five letters to John Wakefield Francis concerning publishing projects and acquisitions of books and journals (1817); a letter from James MacPherson Le Moine to Henry Phillips, Jr. (1890); and, an undated letter from Alexander von Humboldt to Michaux.

A compendium of natural philosophical knowledge, written in 1718-1720 by John Questebrune, chaplain to the 6th Earl of Galway. The chapters treat the various parts of the physical world (earth, water, air, and fire), plants (including a great deal on medicinal plants), animals, and the human body and soul. The volume is embellished with decorative chapter headings and pen and ink and watercolor sketches depicting the terrestrial globe, the Ptolemaic and Copernican solar systems, the phases of the moon, and the human body in dissection.