While cataloging The Pac-Man Fever zine I discovered that there is no Library of Congress Subject Heading or even cross-reference for Tomboys. That's disappointing.
I did a keyword relevance search for tomboys in the Columbia Libraries catalog and found these helpful headings (among others):
- Aggressiveness in children
- Gender identity
- Gender identity disorders in children
- Girls --Psychology
- Girls --Sexual behavior
- Sex role in children
Which one is your favorite?
I would also have liked to apply Butch lesbians as a subject heading.