According to the [Star Trek TNG Companion][1], the artwork was sourced from two local schools and [Alan Sims][2]' children.

> Contest winner Paul Menegay was named for a friend of Brannon
> Braga’s, although **the entries actually came from two area elementary
> schools and prop man Alan Sims’ own children.**


  [1]: https://memory-alpha.fandom.com/wiki/Star_Trek:_The_Next_Generation_Companion
  [2]: https://memory-alpha.fandom.com/wiki/Alan_Sims