Optionally. "Like many terms that start with a non-silent h but have emphasis on their second syllable, some people precede historic with an, others with a." h

Optionally. "Like many terms that start with a non-silent h but have emphasis on their second syllable, some people precede historic with an, others with a." https://en.wiktionary.org/wiki/historic https://en.wiktionary.org/wiki/historic The non-silent h (sound) is itself optional.