Unknown2019-03-042019-03-041955EPM-072-06-001http://hdl.handle.net/20.500.11867/15683Single 8 x 9 inch sheet, bi-folded. Printed recto and verso. Date est. Copyright not renewed.Issued by Old Oregon Trail, Inc., affiliate of American Pioneer Trails Association. Includes a list of books and maps for sale and a form for ordering them and becoming a member, as well.Lewis and Clark expedition