“The odd, isolated end of Robert Indiana’s life included a lawsuit filed in his final days that accused two associates of taking advantage of the elderly artist in his later years by churning out inauthentic works under his name. … That conversation is likely to escalate with the discovery Thursday that Mr. Indiana’s last monumental sculpture was a tribute to bratwurst. It was commissioned by the owners of Johnsonville Sausage, in Wisconsin, that is one of the country’s largest producers. Mr. Indiana appears to have taken to the task of designing ‘BRAT’ with (sorry) relish.”