Long period timer (CB21292E)

Found in Electronic Design, this circuit with the 555 has the extended times by using the transistor in the timing network.

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1 MHz Pierce Oscillator (CB8050E)
The frequency of this Pierce oscillator, found in 1969 documentation, depends on the crystal. The...
0 to 20 second timer (CB20370E)
This simple timer with unijunction transistor was found in an old American technical...
Power supply with voltage quadrupler (CB22343E)
Found in documentation from the 1960s, this power supply employs germanium diodes from the time....