Can you describe Jem's room in the book To Kill a Mockingbird?

From the limited description of Jem's room in To Kill a Mockingbird, one gathers that it is a simple, functional space. To begin with, it is described as "large and square," featuring a doorway, a bed, and a fireplace (267). When everyone is gathered in Jem's room after the attack, Alexandra sits in a rocking chair that is next to the fireplace (267). Mr. Tate sits in a desk chair (268), and later Dr. Reynolds places his package on Jem's desk (273). On 267, Jem's reading light is shaded with a towel, and one can assume that, as there is no further furniture mentioned, the lamp is on Jem's desk. One may draw the conclusion that there is a window present, though one is never specifically mentioned in Jem's room, because there are windows present in Atticus' and Scout's rooms.  One may also infer that his room features high ceilings, as Calpurnia observes in the living room (68).