Physical description

Drawing in pencil on paper. One side of the page shows the outline of three houses in the distance, each with a window and tall chimneys. In the foreground is a similar house, drawn larger. To the left of these are the outlines of totem poles, the leftmost with details of a large bird at bottom. On the other side of the paper is a line drawing of a passenger train car, concentrating on the windows and metal studs. At the top of the page is a diagram in four parts centering in on one of the train windows. Below is printed “zooming as train rolls by frame”.