Linked from
The 17 pages that link to Naphthalene, each with the reason it gives.
Coal tarBroader topic: Coal-tar fractions provided an early industrial source of naphthalene.
Hückel's ruleBroader topic: Its ten π electrons meet the 4n + 2 criterion for the fused system.
Polycyclic aromatic hydrocarbonBroader topic: It is the simplest PAH with two fused aromatic rings.
Fused ringBroader topic: It is the simplest familiar example of an aromatic fused-ring system.
PhenanthreneBroader topic: It is a smaller fused-ring hydrocarbon in the same structural family.