United States. Office of Scientific Research and Development. National Defense Research Committee. Division 6. Section 6.1.

• Acoustic marine speedometer
• Completion report on electronic automatic search
• Completion report on mechanical geographic attack plotter
• Completion report on operational bearing recorder
• Completion report on operator training equipment, model 9 (BDI siglan generator
• Completion report on portable polar chart recorder and servo mechanisms
• Completion report on projector test gear
• Completion report on split projector test unit
• Completion report on the dynamic monitor
• Reactance tube frequency control