On the way out to CA, we stopped for a bunch of letterboxes.  Those were fun, and it was nice to get out of the car regularly.  In total, we found about 7 or so, and didn't find 3, I think.  N found the first one:

And the second one:

For the third one, there were two possible places it could have been.  We split the boys up and sent N to the wrong spot, and D to the right spot.  Poor D really wanted to find one, and N is just too clever.  We let Princess C find some, too. 

Most of these boxes were in really pretty spots.  I wanted to spend more time in these areas, but we were on a mission.  California or bust.