His political and business careers further developed in Minnesota . In addition to operating his own law firm , Robbie served as regional counsel for the Office of Price Stabilization in Minnesota , Montana , North Dakota and South Dakota . He was also a charter member of the Twin Cities Metropolitan Commission and chairman of the Minnesota Municipal Commission . In addition to working on Humphrey 's political campaigns , Robbie represented Minnesota 's 5th congressional district at the 1960 Democratic National Convention
1960 Democratic National Convention
1960 Democratic National Convention
Joe Robbie