Linked from
The 10 pages that link to LC circuit, each with the reason it gives.
InductorRelated: The inductor and capacitor exchange stored magnetic and electric energy.
Spark-gap transmitterRelated: Its resonance sets the frequency of the transmitter’s oscillations.
HenryRelated: Its resonant frequency depends on inductance expressed in henries.
Variable capacitorRelated: A variable capacitor adjusts the resonance of an LC circuit.