Begin with the sides by cutting them so they will pair up all right. The front edges are rounded while the back edges are rabbeted on the inside as deep as the backing to be used. The bottoms are cut as shown in the sketch. Holes about 1/2 in. deep should be bored on the inside at the proper places for the wooden pegs which hold up the shelves.

Completed Bookcase.

Details of Bookcase

The top and bottom boards should have the front edges rounded and sanded the same as the sides. The top board is sanded on one side only and care should be taken to get the best side up.