This writing desk / drawing board was by the Power Brothers, Patent date Oct 20th 1885.
This is a folding desk that was designed for use in the home, particularly for home-schooled children. It is comprised of a wooden frame, a folding wood writing surface and a paper scroll across the top. The first lesson on the scroll is the alphabet. When folded shut, the desk is below the paper scroll. The writing surface lifts up to reveal compartments for chalk and other materials. The dimensions provided below are for the whole desk, folded.
It's 29" long by 22" wide