Series 1: Diplomas from the Princeton University Archives Oversize Collection, 1749-1998 (bulk 1749-1926) consists of 183 original diplomas and photostats, as well as a small number of blank, sample or spoiled diplomas.

John Maclean, Jr. was the eldest of six children of John Maclean, Sr. and Phoebe Bainbridge. His father was born in Glasgow, studied for the medical profession, and became a surgeon. At 24, the elder Maclean immigrated to the United States for political reasons. He was invited to take the vacant chair of natural philosophy, which included chemistry, at the College of New Jersey, becoming the institution's first professor of chemistry. He married in 1797, and John was born on March 3, 1800. Entering the College of New Jersey as a sophomore, he graduated in 1816 as the youngest in his class. He taught for a few months in Lawrenceville, New Jersey before earning a divinity degree from the Princeton Theological Seminary. In 1818 he was appointed as a tutor of Greek at the College of New Jersey, beginning a long, varied, and devoted career at his alma mater. Four years later he was elected to fill the chair of mathematics and natural philosophy, though this did not prevent him from subsequently teaching languages and literature. Maclean also served as the College's librarian from 1824 until 1849.

Having declined the presidency of the College of New Jersey in 1758, Samuel Davies accepted it in 1759 with a reluctance akin to that of his predecessor, Jonathan Edwards. Davies, who thought that his successor, Samuel Finley, was the right man for the job, was urged to take the position, even though some of the College's trustees shared his high opinion of Finley. Born in 1724 in Summit Ridge, Delaware and educated both at home and in the Rev. Samuel Blair's seminary, Davies received his license to preach in 1746 in Newcastle, Delaware. Ordained the following year as an evangelist to Virginia, he went on to serve as the first moderator of the Presbytery of Hanover, encompassing all the Presbyterian ministers in Virginia and North Carolina. At the request of the trustees, Davies traveled to Great Britain with Gilbert Tennent in 1753 to raise funds for the College. Among other uses, the donations collected abroad served to fund the construction of Nassau Hall and the president's house. As president and professor at the College of New Jersey, he was renowned for his emphasis on public service.

While Jonathan Dickinson bears the distinction of serving as Princeton University's first president, Aaron Burr played a central part in organizing the College after its initial establishment and overseeing its move to Princeton in 1756. Burr was born in Fairfield, Connecticut in c. 1715/1716 and graduated at the head of his Yale College class in 1735. From there he moved to Newark, New Jersey to head both the Presbyterian church and a school in classics. Burr, along with Dickinson and five others, established the College of New Jersey in 1746. In 1748 Burr was named president of the college, though he had filled this office unofficially since Dickinson's death in 1747. During Burr's ten years of service he increased enrollment, raised much-needed funds, presided over the erection of Nassau Hall, and instructed the first classes of students to graduate from the College of New Jersey.

The Religious Life and the Chapel series documents religious life on campus, including the programming of the chapel, the Center for Jewish Life, and the Office of Religious Life. Other topics related to the role of religion (and various faiths and denominations) on campus may also be found in this series. For a file on the dean of the chapel, see Series 3 (Administration); for materials that document local churches, see Series 29 (Princeton Area).