A collection of John Maclean’s papers are now available online. Maclean, the 10th president of Princeton University, served from 1854–1868 when the institution was known as the College of New Jersey. The letters, acquired last year, were scanned and loaded as PDFs and linked to the collection’s finding aid via its folder list. These letters to and from John Maclean document the history of the College of New Jersey as well as family matters. Maclean was the son of Princeton’s first chemistry professor, and the papers include the 1814 inventory of the estate of his father, John Maclean, Sr. One of the more interesting documents provides evidence of New Jersey’s connections to slavery. See the last two entries of p. 3 of this inventory, found in Box 4, Folder 11.