1904? 
Hey all, another alumnus here.  As we were all taught, the fraternity was founded in 1904.  However, just today I came across something peculiar––a book with the following passage: "In the fall of '94 a chapter of Pi Kappa Phi was established and then in the spring of '95 our chapter of Sigma Nu was installed....  Although Pi Kappa Phi has more than twice our number, yet we will fight to 'count her for game.  

Fair enough, except for the fact that this book that was published in 1896!  The book is The Delta of Sigma Nu, Vol. 13, which is an annual history published by that fraternity.  The article in question, "The Founding of Beta Tau - N.C. A. & M.", about their new chapter on the campus of the North Carolina College of Agriculture and Mechanical Arts in Raleigh, NC, can be found in Section 13, pages 9–11.  You'll find it here on Google Books.

Can anyone shed light on this?  Might the author have actually been referring to Pi Kappa Alpha?  Or perhaps to an unrelated, now-defunct fraternal organization?  Thoughts?