Frank Furness to be first library in nation to separate the low ceilings of the library stack, where the books were stored, from forty foot plus high ceilinged rooms, where the books were read and studied. The Yarnall Library of Theology, a major American rare book collection, is part of Penn's libraries. The Yarnall Library of Theology was formerly affiliated with St. Clement's Church in Philadelphia. It was founded in 1911 under the terms of the wills of Ellis Hornor Yarnall (1839–1907) and Emily Yarnall, and subsequently housed at the former Philadelphia Divinity School. The library's major areas of focus are theology, patristics, and the liturgy, history and theology of the Anglican Communion and the Episcopal Church in the United States of America. It includes a large number of rare books, incunabula, and illuminated manuscripts, and new material continues to be added. Art installations The campus has more than 40 notable art installations, in part because of a 1959 Philadelphia ordinance requiring total budget for new construction or major renovation projects (where any governmental resources are used) to include 1% for art (Philadelphia's ordinance created the first such program in the country) to be used to pay for installation of site-specific public art, in part because of many alumni who collect and donate art to Penn, and in part because of the presence of the University of Pennsylvania School of Design on campus. In 2020, Penn installed Brick House, a monumental work of art (a "critical fabulation" in language used by its creator, Simone Leigh) at the College Green gateway to Penn's campus (near corner of 34th Street and Woodland Walk). This bronze sculpture, which is high and in diameter at its base, depicts an African woman's head (crowned with an afro framed by cornrow braids) atop a form that resembles both a skirt and a clay house. At the installation, Penn president Amy Guttman proclaimed that "Ms. Leigh's sculpture brings a striking presence of strength, grace, and beauty—along with an ineffable sense of mystery and resilience—to a central crossroad of Penn's campus." The Covenant, better known to the student body as "Dueling Tampons" or "The Tampons", is a large red structure created by Alexander Liberman and located on Locust Walk as a gateway to the high-rise residences "super block". It was installed in 1975 and is made of rolled sheets of milled steel. A larger-than-life white button, known as