Missing Persons: Unresolved Cases

• Full name: Phoenix Lucille Coldon

• Age: 23

• Missing since: December 18, 2011

• Last known location: Spanish Lake, Missouri

• Case status: Missing; unsolved

• Full name: Cornelia June "Connie" Enright

• Age: 19

• Missing since: April 24, 1969

• Last known location: Rotterdam, New York

• Case status: Missing; unsolved

• Full name: Thomas "Myles" Dougherty

• Born: Approximately 1915

• Disappeared: January 12, 1961

• Last known location: Sioux City, Iowa

• Occupation: World War II Army veteran

Key facts

• Disappeared: November 1928

• Location: Grand Canyon National Park, Arizona, U.S.

• Expedition goal: First documented Grand Canyon river run by a woman

• Vessel: Homemade wooden sweep scow