"Ezra Meeker - Planting a Granite Marker on the Oregon Trail - 1906" [Possibly later than 1906. Dirt has filled in around the base of the marker, and trees have grown up in the background.]
"Dedication ceremony for a marker for the Oregon Trail on 'B' Avenue in La Grande, Oregon - April 10, 1906. Ezra Meeker is standing next to the marker." [See: La Grande Evening Observer for April 11, 1906 to read a description of the event.]