  The matching complex $M(G)$ of a simple graph $G$ is the simplicial complex
consisting of the matchings on $G$. The matching complex $M(G)$ is isomorphic
to the independence complex of the line graph $L(G)$.
  Braun and Hough introduced a family of graphs $\Delta^m_n$, which is a
generalization of the line graph of the $(n \times 2)$-grid graph. In this
paper, we show that the independence complex of $\Delta^m_n$ is a wedge of
spheres. This gives an answer to a problem suggested by Braun and Hough.
