He returned to his law practice afterward working with the firm of Borden and Elliot and in 1961 helped form the firm of Wahn, Mayer, Smith, Creber, Lyons, Torrance & Stephenson, now known as Smith Lyons.
M. Wahn retourna à sa pratique et travailla pour le cabinet Borden et Elliot. En 1961, il aida à créer le cabinet Wahn, Mayer, Smith, Creber, Lyons, Torrance et Stephenson, maintenant appelé Smith Lyons.