We were delighted to discover _Madison & Monroe_ and the rest of the presidential series by New Dimension Media on Prime. The short length, about 15 minutes, makes them accessible to younger elementary students as well as the targeted older audience. In the ones we've viewed, we haven't found any inappropriate material, but we will continue to preview them.
Our second grader paid attention to the whole video and has been asking questions about these presidents since then. We are using Tapestry of Grace, Year 3 (the 1800s) for social studies, so it's nice to dovetail some video depictions of the era with the books we are reading.