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The fraternity, founded as a local of this same name in 1907 at the University of Pennsylvania, grew into a national of 41 chapters and 4,800 members as of 1977.
The fraternity evolved through consolidation, becoming what it termed "the eastern branch" of an expanded Phi Lambda Kappa by adding Aleph Yodh He, a national formed in 1908 which it then called its western branch. Aleph Yodh He had been formed at the University of Illinois at Chicago in 1908, and by the time of the merger had chartered nine chapters and claimed 350 members. A third fraternity joined this consolidation, the local chapter named Zeta Phi Mu at Loyola of Chicago, which had been established in 1912 (earlier?). These moves were an outcome of a planned consolidation of Jewish medical fraternities. The amalgamation produced a combined twelve chapters as the outcome of its organizational meeting in Pittsburgh in 1922; some of these may have combined where existing at the same school. The names Aleph Yodh He and Zeta Phi Mu were retired in 1922, the organization taking the national name of Phi Lambda Kappa.
In 1924, the policy was changed to allow graduate members to hold national office. At the 1952 convention, the constitution was altered to make the fraternity non-sectarian.
Symbols
The fraternity's badge was a diamond-shaped with a field of blue. In the upper corner of the field, it had a skull and crossbones, filled in white. The letters ΦΛΚ are set in gold at the midline, and below these is a six-pointed star, also filled in white. The corners of the badge are set with rubies, and the sides with pearls - four pearls on each side.
The colors of the society were blue and white.
Chapters
Following is a list of Phi Lambda Kappa chapters as of 1991. Active chapters are listed in bold; inactive chapters and institutions are in italics.
Noted in The Sentinel of Loyola University (confirm location?) on October 9, 1914, accessed December 15, 2020. As noted, merger proponents' original idea was to unite ALL Jewish fraternities, both professional and general, but this larger plan did not come to fruition.
Baird's 20th notes that Aleph Yodh He joined Phi Lambda Kappa in 1921.
Former and formerly active members of the Professional Fraternity Association or its predecessors: Professional Panhellenic Association or Professional Interfraternity Conference