Legacy collections frequently originate from Indigenous archaeological sites with extensive histories of investigation and removal by numerous institutions and individuals. These “split” collections complicate institutional compliance with the Native American Graves Protection and Repatriation Act (NAGPRA; 25 U.S.C. § 3001-13) , in part by hindering the identification of cultural items, including associated and unassociated funerary objects. In aligning with the spirit of NAGPRA and following guidance received during consultation with Tribal Nations, institutional NAGPRA practitioners strive to repatriate the Ancestors removed from these locations whole, both in body and cultural items, facilitating a respectful return to living communities. Moreover, collaborating across institutions and in coordination with Tribal Nations has the potential both to lessen the burden on Tribal Nations and minimize repetitive trauma brought about by multiple repatriations of Ancestors and cultural items from the same site. Accomplishment of this repatriation goal often requires cross-institutional collaboration to reconcile these legacy “split collections.” In this article, we present the roadmap developed and used by the University of Wisconsin–Oshkosh and the University of Wisconsin–Milwaukee for repatriation with split collections, with some considerations for fruitful interinstitutional collaboration.