The Emerald of Sigma Pi, Vol. 12, No. 4, January 1926 The Emerald of Sigma Pi, Vol. 13, No. 1, April 1926 The Emerald of Sigma Pi, Vol. 13, No. 2, July 1926 The Emerald of Sigma Pi, Vol. 13, No. 3, November 1926 The Emerald of Sigma Pi, Vol. 13, No. 4, January 1927 The Emerald of Sigma Pi, Vol. 14, No. 1, April 1927 The Emerald of Sigma Pi, Vol. 14, No. 2, July 1927 The Emerald of Sigma Pi, Vol. 14, No. 3, November 1927 The Emerald of Sigma Pi, Vol. 14, No. 4, January 1928 The Emerald of Sigma Pi, Vol. 15, No. 1, April 1928 The Emerald of Sigma Pi, Vol. 15, No. 2, July 1928 The Emerald of Sigma Pi, Vol. 15, No. 3, November 1928 The Emerald of Sigma Pi, Vol. 15, No. 4, January 1929 The Emerald of Sigma Pi, Vol. 16, No. 1, April 1929 The Emerald of Sigma Pi, Vol. 16, No. 2, July 1929 The Emerald of Sigma Pi, Vol. 16, No. 3, November 1929 The Emerald of Sigma Pi, Vol. 16, No. 4, January 1930 The Emerald of Sigma Pi, Vol. 17, No. 1, April 1930 The Emerald of Sigma Pi, Vol. 17, No. 2, July 1930 The Emerald of Sigma Pi, Vol. 17, No. 3, November 1930