Yes, once you get the pages and use those to train your blacksmith, it's going to get to the point where you will need blacksmith tomes to further upgrade your blacksmith level.
These tomes are books, instead of pages.
By the time you get to the level where you need the tomes to increase his level further, look in the armor part of the blacksmith crafting, you'll notice in the items, that you can actually craft the tomes yourself. Blacksmith and jewel tomes.
It takes ten pages to craft one tome.
the last two blacksmith levels, 9 and 10 requires secret tomes. at blacksmith level 8, you can actually craft the secret tomes.
to craft a secret tome, you need 5 blacksmith tomes and 5 jewel crafting tomes. That's 50 blacksmith pages and 50 jewel pages to create ONE secret tome.
Just last night, I got my blacksmith up to level ten, after about 20+ hours of grinding for those pages. And this mourning, I got my jewel to level ten. Now I can create those star gems, which are the best gems.