This is a Sources Sought notice for the Indian Health Service to identify vendors capable of supplying official USPS postage stamps for Pitney Bowes mailing systems. The requirement is for a one-year contract to provide stamps in rolls, books, or sheets for the Crow Service Unit in Crow Agency, Montana, and its satellite clinics in Lodge Grass and Pryor, Montana. The government is seeking Indian Small Business Economic Enterprises (ISBEEs) and Indian Economic Enterprises (IEEs) that meet the 51% ownership and earnings requirements under the Buy Indian Act. No budget amount is specified in the notice. Responses are due within 5 calendar days from the date of the announcement.