This style of desk was commonly found in high school class rooms for typing classes, circa 1940s through 1950s. In 1960 when I entered the engineering design world, secretaries used regular desks and did not stow their typewriters at the end of the day, a time saving move. If they were to be out of the office for several days, they might put a dust cover over their machine.

By 1970, monitors and keyboards began to appear on desktops and that style of desk disappeared. The title, Secretary, also changed to Managerial Assistant or similar.

The primary wood of your desk appears to be oak. The side of the drawer is a solid, sawn board, and it is not sanded or planed. The saw marks are visible and seems to have been made by a large circular saw. Later lumber would have been cut by a band saw to minimize wastage. This indicates the drawer was made before band saws came into use as the main saw in a lumber mills. The drawer construction is good, but utilitarian. The maker did not bother to smooth the outer surfaces of the drawer that would be hidden.

The old typewriter lift desks are good as mixer stands!