Souvenir ticket for the Lewis and Clark Centennial exhibit from 1905, in Portland, Oregon. On the front of the ticket is a decorative illustration, showing Sacajawea, Meriwether Lewis, William Clark, the ship Columbia, and the Oregon Pony. The back of the ticket is individually numbered, with additional text.

Letter written on January 11, 1880 from Henry Failing to Thomas Robertson, regarding the death of Robertson’s wife and Failing's sister-in-law, Mary Freeland (Corbett) Robertson.

Ticket for the 1905 Lewis and Clark Exposition in Portland, Oregon, signed by Thomas Robertson (1881-1924). The reverse of the ticket includes a photograph of Robertson wearing a hat and suit.