Again per Joe Strapac's 'Southern Pacific Diesel Locomotive Compendium Volume 2' : there is no mention in the text or photo captions of dual control stands or lower gearing. Both these items were rare enough in ' modern ' Espee diesels as to believe they would have been mentioned. The only real stated oddity in the SD - 39 was the use of a DC Generator; presumably to simplify wiring and due to the relatively low horsepower prime mover. All other Espee EMD road diesels since the 35 series used AC Alternators & DC rectifiers. It has been stated in the motive power books of several railroads,( WP, SP, Santa Fe ), that the DC electrical controls in the GP / SD - 35 were overworked & overcomplicated. The Espee's fleet of SD - 39's had a stated gross weight of 416,600 lbs and a tractive effort of 104,150 lbs. Real stump pullers...