Lots of interesting things shaking out on the Millers of the quaint town of Columbus, Indiana. We know he was intimately involved with the architect who designed the St. Louis Arch. Also note, J Irwin Miller, CEO of Cummins Engines, was part of the Council on Foreign Relations.

https://duckduckgo.com/?q=%22irwin+miller%22+site%3Ahistory.state.gov

https://history.state.gov/historicaldocuments/frus1969-76v04/d119

https://history.state.gov/historicaldocuments/frus1969-76v04/d10

https://history.state.gov/historicaldocuments/frus1964-68v09/d175

https://history.state.gov/historicaldocuments/frus1964-68v09/d167

https://history.state.gov/historicaldocuments/frus1964-68v09/d164

https://history.state.gov/historicaldocuments/frus1964-68v09/d165

https://history.state.gov/historicaldocuments/frus1964-68v09/summary

https://history.state.gov/historicaldocuments/frus1964-68v09/d172

https://history.state.gov/historicaldocuments/frus1964-68v09/persons#p_MJI1