Mary Sylvestre Missing Person Case

May 29, 2011

Jul 30, 2024

Mary

Sylvestre

85

37

65 inches

75 inches

160 lbs

180 lbs

American Indian / Alaska Native

Female

On September 11, 1977, a 37-year-old woman named Mary Jean Sylvestre was on a moose hunting trip with three friends in the rugged wilderness of Palmer, Alaska. A resident of Buffalo Mine Road, located between Palmer and Sutton, Mary was an experienced outdoor enthusiast. The group was navigating the Granite Creek area, about six miles past Sutton, when they attempted to cross the rushing water on horseback. During the crossing, Mary was thrown from her horse into the powerful current. Her companions watched, unable to help, as the creek swept her downstream and out of sight. She was never seen again. At the time she vanished, she was dressed for the elements in a wool jacket, a red and black plaid flannel shirt over an orange shirt, jeans, and leather chaps. She was also wearing heavy socks, brown boots, and a gold wedding band on her left finger. Immediately following the incident, an extensive search was launched, but the vast and challenging terrain yielded no trace of Mary. The Alaska State Troopers investigated her disappearance, with a report filed the day after she was last seen. Originally from Albuquerque, New Mexico, Mary had previously worked as a school bus driver before moving to Alaska. Despite the exhaustive efforts of search parties and law enforcement, her body was never located, leading to the presumption that she had drowned in the tragic accident. For decades, the case of Mary Jean Sylvestre has remained open, a somber entry in the records of Alaska's missing persons. Her disappearance is classified as a suspected accident, a lost or injured person case swallowed by the unforgiving Alaskan wilderness. Without the recovery of her remains, a definitive conclusion to what happened in Granite Creek remains elusive, leaving her family with unanswered questions. The overview of the case is a heartbreaking story of an adventure that turned into a tragedy; Mary, a 37-year-old woman, vanished while on a hunting trip with friends after her horse stumbled in a river, and the strong current carried her away. She has not been found, and her case endures as a painful reminder of the untamed beauty and inherent dangers of the wild.

Sep 11, 1977

Palmer

Alaska

Matanuska-Susitna Borough

No

21569

Alaska State Troopers

Anchorage

Alaska

Anchorage Borough

99507

Malia Miller

Missing Persons Clearinghouse Manager

5700 East Tudor Road, Alaska

9072695511

State

Law Enforcement

G77001956

1977-09-12

Alaska State Troopers

Black

Brown

Brown

07/13/2026