This circuit was obtained from an American 1980s documentation. The frequency depends on the crystal and the circuit may be a PNP that reaches the generated frequency.
The oscillator of this circuit operates around 8 MHz, but the output will be at a frequency three times...
This very low current circuit with the ICM7860 was found in the April 1995 Electronics Now...
This circuit was obtained from an English magazine from 1979, but can be easily assembled today...