- Series: Professor Timkin Series Record # 39424
- Series Tags: antigravity (2), telepathy helmet (1), tractor ray (1), broadcast wireless power (1), telepathy (1), venus (1), Venusians (1), energy ray (1), invisible world (1), thought recorder (1), thought broadcaster (1), supertelescopes (1)
- Professor Timkin
- 1 Venus Liberated (1929) [SF] by Harl Vincent
- 2 Faster Than Light (1932) [SF] by Harl Vincent