Bessie was an old steam power tractor that was used in O 'Gill's Dental Floss Farm. She was designed to harvest the floss, however, she ultimately fell apart, and cannot be fixed as they no longer manufacturer parts for her.
Afterwards, her fate is unknown.
She was only seen in The Wonderful Wizard of Ha's.
- According to Brian Roberts, Bessie was added in the final version of the story.