You probably saw these other pages, looks like you have
Phoenix to
Branson already.
From there, you can adjust the details of the trip from
Branson to Washington, DC. That's a long drive, so you may want to customize the stops along the way.
Washington, DC has plenty to do in the area.
Finally, it's a short trip from
DC to NYC. If you're driving back from
New York City, I would probably look for two different routes to make it more interesting. Otherwise, if you're moving or only driving one-way, then hopefully you can take your time and really enjoy the cross-country trip.
If you need more advice, feel free to post another question focusing on a specific area of the country.
