A process for steam straightening and kiln drying lumber, the lumber being held under total restraint with respect to warping during the process. The lumber is steam straightened and kiln dried to a moisture content of nine percent using a cross-circulation air velocity of 1000 f.p.m. at dry and wet bulb temperatures of 240* F and 160* F for a first interval followed by a second interval at 195* F and 185* F. The lumber is cooled prior to being released from restraint.