 He co-wrote a book with Baayork Lee, another "Chorus Line" cast member, about the musical's origins and evolution, entitled "On the Line", published by William Morrow in 1990.Walsh soon left his dancing career to concentrate on choreography, musical staging, and direction.His credits include "The Best Little Whorehouse in Texas" (1978 and 1982) with "Chorus" cast member Pam Blair, "The 1940's Radio Hour" (1979), "A Day in Hollywood/A Night in the Ukraine" (1980), with "Chorus" cast member Priscilla Lopez, "Do Black Patent Leather Shoes Really Reflect Up?"