- E-bookThe Study of Elementary Electricity and Magnetism by ExperimentThomas M. St. John
- E-bookHow Two Boys Made Their Own Electrical ApparatusThomas M. St. John
- E-bookThe Study of Elementary Electricity and Magnetism by ExperimentThomas M. St. John
- E-bookHow Two Boys Made Their Own Electrical ApparatusThomas M. St. John