Bombard Sheet music

Greetings,

I live in South Australia and I am trying desperately to find sheet music or musical notation to learn to play the Bombarde.

Do you have any links to books or places I can buy sheet music notation online? Can you point me in the right direction?

The Bombard is unknown here and getting sheet music for it is impossible!  I do hope you can help as don’t know where else to ask!

Thank you for your time

cheers
Kay Bridge