Office of the Tribal Secretary
Courtney Sully, YST Secretary
Phone: 605-384-3641 Ext: 1008 (office)
Phone: 605-469-6969 (cell)
Email: csully@yanktonsiouxtribe.net
Tribal Member’s only - Please use the form below to verify enrollment, in order to gain access to documents and forms.
*Please note you must use the same email for verification and access.