Boys in Kindergarten and First Grade were interviewed and here are their favorite books, series, and authors:

Fly Guy series
Little Critter series
Power Ranger books
Superhero books
Lego books
Nonfiction books about animals
Star Wars books
Elephant and Piggie Series
Sports books
Monster books
Nonfiction books about machines

Mo Williams Books
Pete the Cat
Scaredy Squirrel
National Geographic Kids