("Y" Blockhouse, one of the three most advanced American outposts at Toulgas (Dwina River Front) This blockhouse is located beyond the lines at upper Toulgas, on the main road, along which two patrols are passing, one returning from a reconnaissance in the direction of the Bolsheviki positions, the other on the way out. Passage along the road is obstructed by barbed wire entanglements. The blockhouse has a garrison of five men and is equipped with a Lewis gun. It has telephone connections with force Headquarters. Toulgas, Russia.)
