Palm-leaf book in Malay and Arabic.

A book of Cakchiquel sermons. Libro de sermones predicables en las fiestas mas principales de todo el año y de las de la orden de N.Serafico Pe San Francisco compuesto en lengua cakchiquel.

The Theologia Indorum ("Theology for the Indians" or "Theology of the Indians") was written by the Spanish Dominican friar Domingo de Vico from 1552-1554. It is considered the first original Christian theology written in the Americas and the longest single text written in an indigenous language of the Americas in the colonial era. Written in K'iche' (sometimes written as "Quiché,") a Mayan language of Guatemala, it played a major role in Spanish efforts to convert the Highland Maya.

Letter to "Rev'd Sir," Lonehead, January 6, 1777, concerning the religious aspects of following the King's command for a fast day: does this constitute prayers against the American troops?

Books of hours were among the most common devotional texts of the Middle Ages. Produced throughout western Europe until the early 16th century, books of hours were important status items, often elaborately illuminated, that might be tailored to the specific tastes of well-heeled clients to reflect interests in particular saints or to incorporate other elements of their personal lives and religious, political, or social commitments. Although the specifics of its origin remain uncertain, the APS Book of Hours is organized in a fairly typical fashion. Beginning with a calendar specifying feast days and other holy days, the book includes readings from the gospels, prayers (Obsecro te, O Intemerata), the Hours of the Virgin, the Hours of the Cross, the seven penitential psalms (6, 31, 37, 50, 101, 129), the litanies and prayers, the office for the dead, and additional prayers devoted to Saints Barbara, Anthony, Margaret, and Sebastian. Each of the 22 sections begins with a full-page illustration, many with additional vignettes. An additional vignette of a figure of death is included in the office of the dead. The volume was donated to the APS by Detmar Basse-Müller in 1806.

Books of hours were among the most common devotional texts of the Middle Ages. Produced throughout western Europe until the early 16th century, books of hours were important status items, often elaborately illuminated, that might be tailored to the specific tastes of well-heeled clients to reflect interests in particular saints or to incorporate other elements of their personal lives and religious, political, or social commitments. Although the illuminated pages have been removed from this book of hours, the gift of Timothy Matlack in 1811, it remains an elegant and ornate manuscript, with initials and line fillers in prominent gilt, red, and blue. Only one page remains from the calendar (the last), however many of the major elements of the book can be identified, including the prayers to the Virgin, the Stabat Mater Dolorosa and stations of the cross, the penitential psalms, litanies, and prayers, and the office of the dead.

Volume 3 (G-L) of a biographical and geographical dictionary of Jesuit and Franciscan missionaries in Central and South America, with citations of printed and manuscript sources. Primarily 17th century missionaries.

A volume of sermons.

Cakchiquel language texts. Contains statement of doctrine, catechism, confessional, brief religious discourses, as well as a grammar of the Cakchiquel.

In these letters to Caroline Watts, a young friend and teacher in Durham, England, Spencer writes principally about the teaching of geometry and astronomy. He also comments on current political and literary events in England, including John Bright's defeat, the Corn Laws, and theories about health and religion. There is frequent mention of his brother Thomas Spencer, and his son Herbert Spencer.

This is a Khmer (Cambodian) Mul script, partly in Pali.

Adam Sedgwick (1785-1873, APS 1860), geologist, was an important figure in the development of the modern discipline of geology. He was educated at Cambridge, being ordained in 1817. An excellent field geologist, he did significant work interpreting complex old rock in such places as Devonshire (naming the Devonian Period after that location), Cornwall, and the Lake District, correlating his findings with strata in places such as Germany. Sedgwick first interpreted strata from the period he named Cambrian. He served in many professional organizations and was honored for his work with the Wollaston and Copley medals. Sedgwick, a Liberal in politics, served on committees that reformed the administration of university education. Despite being a friend of Charles Darwin's, Sedgwick was critical of the materialist bent of Darwinian thought. The 37 letters in the collection were acquired at various times, mainly through purchase, and assembled for the collection. The letters span the dates 1825-1870. Individually most letters are not especially significant, but collectively they touch on most aspects of Sedgwick's life and career. There are letters about Sedgwick's work on university reform, the Geological Museum at Cambridge, lectures, colleagues, travel, health, and family. Only one letter in the collection delves into detail about Sedgwick's geologic work.

Letters (including some transcripts and photostats) from and to Vaughan from many American and British correspondents, including: Also personal correspondence and business papers of Benjamin, Charles, Petty, Samuel Sr., Samuel Jr., William, William Oliver, and Sarah Vaughan (2 boxes); lectures, mostly in shorthand (3 vols.); a large number of notes and memoranda on a wide variety of topics, such as agriculture, architecture, astronomy, diplomacy, diseases, dueling, electricity, hieroglyphs, internal improvements, medicine, meteorology, land, manufactures, politics, punctuation, religion, silk-manufacturing, stock-breeding, taxation, Unitarianism, Benjamin Franklin, John Locke, Napoleon I, Joseph Priestley, Bowdoin College, town of Hallowell, Maine; notes on the peace negotiations, 1782-1783; miscellaneous legal papers; genealogy of the Abbott-Vaughan families. For a personal account of the collection, see Mrs. Mary Vaughan Marvin, "The Benjamin Vaughan Papers," APS Proceedings 95 (1951): 246-249.