VTG Antique Camp Michikinikwa Indiana Carved Letter Opener Chief Little Turtle

I love to do research, but couldn't find much on this one. Lot of two wooden letter openers. One is inscribed with Camp Michikinikwa on one side and J.R. Robertson on the other. The second letter opener has no inscription.  Chief Michikinikwa was also called Chief Little Turtle. Little Turtle was born in what became present-day Whitley County, Indiana, at either a small Miami village along Devil's Lake or a larger nearby village known as Turtletown (present-day Churubusco, Indiana). Little Turtle lived at Turtletown, along the Eel River, until 1780.Little Turtle was a Sagamore of the Miami people, who became one of the most famous Native American military leaders.  Born: 1752, Indiana Died: July 14, 1812 (age 60 years), Fort Wayne, IN Place of burial: Little Turtle Memorial, Fort Wayne, IN Battles/wars: La Balme's Defeat; Northwest Indian Wars  Measurements in photographs along with a ruler.