Proof, Mr. Tesla, more proof!
Response of The Century Magazine's editor - in - chief, Robert Underwood Johnson, regarding the draft version of Nikola Tesla's book "The Problem Of Increasing Human Energy".
| No. | 03 |
| Subject | R.U. Johnson's Thoughts on the Draft Version |
| Date | April 20, 1900 |
| Short Description | Robert Underwood Johnson to Nikola Tesla, regarding draft versions of his article "The Problem of Increasing Human Energy." |