The Crossroads Extras
In The Crossroads, Zack builds a tree house. Chris based it on the one he and his four brothers built when they were growing up on Signal Mountain in Tennessee. As you can probably tell, none of the Grabenstein boys became an architect or carpenter!
When writing The Crossroads, Chris used this Greyhound Bus Ad from a 1950s Life magazine as an inspiration for some of the characters. Does anybody look familiar?