Here's the top-level hint - after this, it's a giveaway: [Reassembling Puzzle 67 is a two-step process. The first step is to make sure none of its cells are left blank; none of the first six grids has a blank cell, now, does it? Look at where the blank cells are in the final grid and try to find a simple, unambiguous way of filling them in with those little gray letters, based on the solutions of the first six grids. Zotanna says there's "knowledge to be had from any journey"... Once that's done, the second step is to put the givens (the colored numbers) into the grid that make it a solvable puzzle on its own. Obviously, in making this grid like the others, this is going to result in some of those gray letters getting replaced. Perhaps the letters themselves may tell you how to do this... And if you figure out the significance of the titles (and remember what they represent - I've reminded you before), you should know what numbers to use and where.] - ZM