==Existence after 1888== 
 The only source cited for the proposition that Irving was absorbed into the fraternity is a letter agreement covering the fraternity's moving into a University-owned house as a part of the 1966 Cornell Group Housing Plan.  The document is drafted as if the legal name of the organization was the Irving Literary Society doing business as the New York Alpha Chapter of Phi Kappa Psi. I checked with the corporation data base for New York State and do not find any corporation with the name "Irving Literary Society."  Are there any documents covering the merger of the Irving Literary Society into Phi Kappa Psi?  Is what happened that when Irving folded, its leaders were members of Phi Kappa Psi and they just took its papers with them to be kept by that fraternity?  Are there any independent sources which show that the two organizations are related?  I find it implausible that a co-educational organization with members from a number of different fraternities could instantly be transformed into a male-only organization drawing all of its members from just one fraternity. 

 If the connection between Irving and the fraternity cannot be independently sourced, all post-1888 material should be removed from Wikipedia. Thanks,