| Year | 1930 |
| Date | 31-Jul |
| Volume | 63 |
| Issue | 1,525 |
| Page | 101 |
| Category | Electrical |
| Part | 4 |
| Title | Electric Motor Installation and Management |
| Author | A.H.Avery |
| Notes | Frame type, bearings, voltage, horse-power, speed, rating, connection, quite constant speed, nearly constant speed, fairly constant speed, speed depending on load, high-starting torque, low-starting torque, variable speed motors |