Interesting and challenging topic, Squatch. Not really that easy to travel the OR Trail from MO to the Northwest any longer! A couple of years ago I spent a short vacation in northern IL and southern WI. So I had to check up on transport and carry laws for my shotgun & revolver through MO, IA, IL, and WI. Lots of things to look at, especially when a state's laws are not real supportive.
Thanks for posting the publication you just got. There is also a good reference source for states' gun laws available on-line from the NRA-ILA. They summarize interstate transport of firearms, specific state laws, profiles, etc. Here is the web link:
https://www.nraila.org/gun-laws/