 Leah Kedlow came from Wayne State University and she presented a synthetic talk about American consumerism and she used advertisements. And what made her use of the advertisements so effective is that she used them both in her synthetic talk and then she came back to them when we got to what we usually include in all of our programs, which is a skills section, some sort of interpreting history. So she went from the general, this kind of broad approach to something that was based in research and the teachers really liked that combination. So Leah did a brilliant job at what I thought of bringing those materials together. We had other speakers who have done the same thing, Andrew Hurley has done similar work for us around his book, but he does a wonderful job of drawing a synthetic portrait and using images and other materials in it and then coming back to them and during the skills sorts of sections of our workshop. Yeah, that's and in fact with Andrew Hurley's work on consumerism, we include a tour of the suburbs of Cleveland that we've developed to compliment it, to kind of build out some of the themes he pulls out in his study of the landscape.