J. Roberts, a member of the class of 1890. Roberts House colors are blue and orange and their mascot is the walrus. (Allison Rader) Truesdell is named for longtime GA teacher, Walter Truesdell. Truesdell was Phi Beta Kappa and taught Latin for thirty years. The house colors are blue and silver and the mascot is the timberwolf. (Rachel Lingten) Kershaw is named for headmaster Dr. William Kershaw (1877–1915). Kershaw's colors are navy blue and light blue and the mascot is the kangaroo. (Matt Dence) Galloway is named for early Academy trustee Joseph Galloway, a notable Philadelphia figure during the Revolution. Galloway's house colors are black and yellow and their mascot is the Griffin. (Michael Torrey) Osbourn is named for longtime headmaster Dr. Samuel E. Osbourn (1915–1948). The house colors are green and white. (Susan Merrill) Administration Alma mater The alma mater was written c. 1910 by J. Hefflestein Mason, a member of the class of 1900. Class songs originated as early as 1885 and appeared in each class's Ye Primer. Before the current alma mater, the school had a few lesser-known "alma maters" and a school yell which was sung after 1910. Before the 1970s, the alma mater was sung along with the school hymn Our God, Our Help in Ages Past. Mason went on to write more music and perform with the Philadelphia Opera Company. Headmasters David James Dove (1761–1763) Hilarius Becker (1761–1778) Pelatiah Webster (1763–1766) John Woods (1765–1769) John Downey (1769–1774) Thomas Dungan (1774–1777) George Murray (1777–1778) (School closed due to the Revolution, 1778–1784) George Murray (1784–1786) Thomas Dungan (1786–1805) Rev. Frederick Herman (1794–1795) (German master) Nathaniel Major (1805–1806) John Conrad (1806–1809) William Woodman (1809–1810) George I. Howell (1810–1811) Enion Williams (1811–1814) Stephen H. Long (1811–1814) Jedediah Strong (1814–1819) Rev. John R. Goodman (1819–1820) John M. Brewer (1820–1821) Walter Rogers Johnson (1821–1825) J.G. Cooper (1826–1827) George R. Giddings (1828–1830) Moses Soule (1830) Theodore Russell Jenks (1830) Amos Bronson Alcott (1831) William Russell (1831) John F. Watson (1834) John C. Whitehead (1834) Rev. Dr. Christian F. Cruse (1835–1836) Eugene Smith (1836) Rev. Henry K. Green (1836–1839) Alfred J. Perkins (1839–1843) W.M. Collom (1843–1849) S.C. Miller (1849–1853) James Withington (1853–1863) Cyrus V. Mays (1863–1872) Rev. William Travis (1872–1877) Dr. William Kershaw (1877–1915) Dr. Samuel E. Osbourn (1915–1948) John F. Godman (1948–1952) Dr. Richard W. Day (1952–1956) Donald Hope Miller (1956–1966) Samuel Stroud (1966–1970) Edward "Bud" Kast (1970–1986) James Carey Ledyard