Not a whole lot is available yet, but as I get my files in order I'll start posting things that others might find useful here. There are many other teachers providing material for this course, but here is my small contribution. You're welcome to use anything here freely, modify, whatever. Teachers need to help each other out.
I made these to use for my Canvas course home page. Quite a bit of thought went into each of the headers in an attempt to choose a turning point event that best represents either the time period or its impact on history. This was an incredibly difficult task, as each of the periods has numerous major events that could all arguably do better to represent the United States.