in 1765; the first university teaching hospital in 1874; the Wharton School, the world's first collegiate business school, in 1881; the first American student union building, Houston Hall, in 1896; the country's second school of veterinary medicine; and the home of ENIAC, the world's first electronic, large-scale, general-purpose digital computer in 1946. Penn is also home to the oldest continuously functioning psychology department in North America and is where the American Medical Association was founded. In 1921, Penn was also the first university to award a PhD in economics to an African-American woman, Sadie Tanner Mossell Alexander (in economics). Motto In 1932, all elements of the seal were revised. As part of the redesign, it was decided that the new motto "mutilated" Horace, and it was changed to its present wording, . Penn's motto is based on a line from Horace's III.24 (Book 3, Ode 24), . From 1756 to 1898, the motto read . When it was pointed out that the motto could be translated as 'Loose women without morals', the university quickly changed the motto to . Seal The official seal of the Trustees of the University of Pennsylvania serves as the signature and symbol of authenticity on documents issued by the corporation. A request for one was first recorded in a meeting of the trustees in 1753 during which some of the Trustees "desired to get a Common Seal engraved for the Use of [the] Corporation". However, it was not until a meeting in 1756 that "a public Seal for the College with a proper device and Motto" was requested to be engraved in silver. The most recent design, a modified version of the original seal, was approved in 1932, adopted a year later and is still used for much of the same purposes as the original. The outer ring of the current seal is inscribed with "Universitas Pennsylvaniensis", the Latin name of the University of Pennsylvania. The inside contains seven stacked books on a desk with the titles of subjects of the trivium and a modified quadrivium, components of a classical education: Theolog[ia], Astronom[ia], Philosoph[ia], Mathemat[ica], Logica, Rhetorica and Grammatica. Between the books and the outer ring is the Latin motto of the university, "Leges Sine Moribus Vanae". Campus Much of Penn's architecture was designed by the Philadelphia-based architecture firm Cope and Stewardson (same architects who designed Princeton University and a large part of Washington University