(Portland, OR)  --  Portlanders will have a chance to see Marcus Mariota's Heisman Trophy up close.  The award will be on display at the Oregon Historical Society in downtown Portland for three days, from June 5th through the 7th.  Mariota, who was picked second overall by Tennessee in this year's NFL Draft, is the first Oregon Duck to win the coveted Heisman Trophy.  Admission to the museum will be free during the three days the Heisman is on display, with Nike donating sponsorship.