Mark Roland Langdale 
The Moon Keeper (Once Upon a Blue Moon) [EPUB ebook] 

This is a quirky, weird and wonderful tale of a boy named Isaac Moon who climbs to the moon.  He does it by climbing a giant glass ladder, that’s right, you heard me, a giant glass ladder to the moon!
Once there, he becomes the Moon Keeper – Old Father Moon’s right hand man or, if you prefer, the Moon Keeper’s Apprentice.
The Moon is a great, gold fob watch and the glass face is made of clear moonstone.
Isaac is an apprentice lighthouse keeper on earth for his grandfather and both live on the Isles of Clouds but not in St. Cloud, Minnesota you understand.
Oh, and the boy climbs to the moon in an old, brass diving suit helmet, boots and all!  And he’s allergic to life and dust or some such nonsense!
Mark Roland Langdale (The Storyteller)