prr preferred 4-4-4-4 and asked baldwin to consider a passenger version with 80" drivers and a freight version with 72" drivers. however, the cooperation between prr and baldwin, which proceeded without signing any agreement or contract, for the development of the new high-speed duplex engine didn't go smoothly. ten months after the first conference ( april of 1937), prr ended baldwin locomotive work's consultation and assigned the task to a consortium of baldwin locomotive works, american locomotive company and lima locomotive works under a joint contract. t. w. demarest headed the joint committee, general superintendent of motive power in prr's western region.