Taking apart a Williams caboose

I bought a Williams caboose at a train show but it didn’t have instructions with it. The body style is has the four port-hole windows on the sides, and it is lettered for the B&M. The window glazing on the inside fell out of the windows so I want to open it up to put it back in, but I am not sure how to take it apart.

Thanks.

I believe there is two screws, one at each end of the caboose, basically where the doors are on the ends.