I was reading The Boxcar Children to my niece awhile back. At one point, they're walking along a road and run into a fork in a road. The fork has a sign pointing to Silver City and Greenfield. Both are actual places in New Mexico, but they're over 300 miles from each other.
Silver City, NV is a near ghost town at this point.
Greenfield, CA and Silver City, CA are similarly hundreds of miles away (189 miles by the shortest car route).
The baker, who was chasing them, said that he didn't think that they could've made it as far as Silver City, which suggests that they were, in fact, far from each other.
Is the book referring to actual places? If so, where? Where are the books set?