This volume consisting of two research papers and one survey paper is a good guide to look into a new emerging field, which stems from the interaction of combinatorics and representation theory. Dr. John Stembrige is famous for his study on combinatorics in Lie algebra representations, Coxeter/Weyl groups, and other topics. Also he is the author of the Maple package software ``SF'' (Schur functions), ``coxeter/weyl'', and ``posets''. Dr. Jean-Yves Thibon is one of the most active researchers in this field and is famous for many collaborated works with Alain Lascoux and Bernard Leclerc and other famous researchers. Dr. Marc van Leeuwen is famous in the field of manipulation of Young tableaux and its related topics. He is one of the authors of the software package "LiE" for Lie group computation.