The beaten-up suitcase had been in the Newell family for more than a century, passed from dusty closet to dusty closet and pulled out every now and then for guests.They would unlatch the metal clasps and take out a fringed shirt adorned with careful beadwork, a weathered pair of moccasins and an elaborate headdress that trailed eagle feathers down to the floor.Passed along with the suitcase was the story told by their 19th-century ancestor, Major Cicero Newell, who said he had received the clothing from the well-known Lakota leader, Chief Spotted Tail, during his stint as an agent for the federal government’s Indian affairs office beginning in the late 1870s in what is now South Dakota.The suitcase had been passed down five generations, ending up in the guest room closet of Newell’s great-great-grandson, James, a retired salesman living in a small town in Washington State.But when it came time for James Newell to think about passing it along again, the sixth generation had a different idea.“‘Well, Dad, why don’t we try giving it back?’” James Newell, 77, recalled his son, Eric, asking when the topic came up several years ago at the dinner table.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access.If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe....