Obtained from a 1980s Signetics documentation, this circuit uses a common integrated circuit at the time. The performance curves are given next to the diagram.
This is an old test circuit for integrated TTL counters, feeding a Nixie tube, common at the time....
This old oscillator using germanium transistors has a high impedance headphone as inductor to...
This preamp with several inputs using germanium transistors from the time was found in Japanese...