The Emerald of Sigma Pi, Vol. 27, No. 4, February 1941 The Emerald of Sigma Pi, Vol. 28, No. 1, May 1941 The Emerald of Sigma Pi, Vol. 28, No. 2, August 1941 The Emerald of Sigma Pi, Vol. 28, No. 3, November 1941 The Emerald of Sigma Pi, Vol. 28, No. 4, February 1942 The Emerald of Sigma Pi, Vol. 29, No. 1, May 1942 The Emerald of Sigma Pi, Vol. 29, No. 2, August 1942 The Emerald of Sigma Pi, Vol. 29, No. 3, November 1942 The Emerald of Sigma Pi, Vol. 30, No. 1, May 1943 The Emerald of Sigma Pi, Vol. 30, No. 2, August 1943 The Emerald of Sigma Pi, Vol. 30, No. 3, November 1943 The Emerald of Sigma Pi, Vol. 30, No. 4, February 1944 The Emerald of Sigma Pi, Vol. 31, No. 1, May 1944 The Emerald of Sigma Pi, Vol. 31, No. 2, August 1944 The Emerald of Sigma Pi, Vol. 31, No. 3, November 1944 The Emerald of Sigma Pi, Vol. 31, No. 4, February 1945 The Emerald of Sigma Pi, Vol. 32, No. 1, May 1945 The Emerald of Sigma Pi, Vol. 32, No. 2, August 1945 The Emerald of Sigma Pi, Vol. 32, No. 3, November 1945 The Emerald of Sigma Pi, Vol. 32, No. 4, February 1946