While I can't believe anyone is willing to read all of these, the good folks at the Salt Report put these links together so I'll pass them on. I don't think these are all of them. But it's what was posted. Enjoy.
http://report.saltcpa.com/2018/07/multistate-americans-for-tax-reform-wayfair-testimony-july-24-2018/
http://report.saltcpa.com/2018/07/multistate-mayer-brown-house-judiciary-wayfair-testimony-july-24-2018/
http://report.saltcpa.com/2018/07/multistate-class-tech-cars-inc-house-judiciary-wayfair-testimony-july-24-2018/
http://report.saltcpa.com/2018/07/multistate-national-conference-of-state-legislatures-house-judiciary-wayfair-testimony-july-24-2018/
http://report.saltcpa.com/2018/07/multistate-multistate-associates-incorporated-house-judiciary-wayfair-testimony-july-24-2018/
http://report.saltcpa.com/2018/07/multistate-brandsmart-on-behalf-of-the-national-retail-federation-house-judiciary-wayfair-testimony-july-24-2018/
http://report.saltcpa.com/2018/07/multistate-american-legislative-exchange-council-house-judiciary-wayfair-testimony-july-24-2018/
http://report.saltcpa.com/2018/07/multistate-national-taxpayers-union-foundation-house-judiciary-wayfair-testimony-july-24-2018/
And if you really want some excitement, here's the video
https://www.youtube.com/watch?v=0AW3eMr96vY