X | 40k | multi | Alexander Voskresensky |
- | 40c | |||||
- | $1.60 | |||||
- | $3 |
X | 25h | multi | Nikola Tesla | |||
X | 30h | multi | Popov | |||
X | 35h | multi | Branly | |||
X | 60h | multi | Marconi | |||
X | 1k | multi | Hertz | |||
X | 2k | multi | circuit diagram & Edwin Armstrong |
X | 5d on 4d | graybl | Postmaster Isaac Nichols on the brig Experiment |