Caledonia Jane Doe Solved: How DNA Identified Tammy Jo Alexander in New York After 35 Years

On the chilly morning of November 10, 1979, a rural highway worker in the town of Caledonia, Livingston County, New York, discovered the body of a young girl lying in a rain-soaked cornfield along Route 20. She had suffered two fatal gunshot wounds to the head and back. For thirty-five years, she was known affectionately to the local community—who provided her a formal burial and headstone in Greenmount Cemetery—as ‘Caledonia Jane Doe’. In January 2015, the Livingston County Sheriff’s Office, the FBI, and the University of North Texas Center for Human Identification utilized familial DNA testing to officially restore her identity as sixteen-year-old Florida runaway Tammy Jo Alexander.

The 1979 Caledonia Cornfield Discovery & Scene Reconstruction

On November 10, 1979, a farmer driving along Route 20 near Caledonia, approximately 23 miles southwest of Rochester, spotted a body in a roadside cornfield. Livingston County Sheriff’s deputies arrived to find a teenage female dressed in a distinctive red nylon jacket, tan corduroy pants, and blue moccasin boots.

The post-mortem examination revealed she had been shot once in the head and once in the back with a .38 caliber handgun during a heavy overnight rainstorm. Crucially, forensic pathologists preserved her clothing, dental charts, and tissue specimens in county cold storage, while the compassionate citizens of Caledonia paid for her burial beneath a headstone reading: ‘Lest The World Forget.’

Thirty-Five Years of Community Care & Scientific Exhumation

Livingston County Sheriff John York and Investigator Dan Rittenhouse refused to let the case go cold. In 2005, the Sheriff’s Office authorized the exhumation of the body from Greenmount Cemetery in Dansville.

Forensic anthropologists extracted mitochondrial and nuclear DNA from bone samples, which was sequenced and uploaded to the FBI’s National Missing and Unidentified Persons System (NamUs). Forensic palynologists also analyzed pollen grains trapped on her clothing, proving she had traveled through Southern states, including Florida and Georgia, prior to her arrival in New York.

The 2014 NamUs Lead & The UNT Health Science Center Match

In 2014, a high school classmate in Brooksville, Florida, noticed that her childhood friend, Tammy Jo Alexander—who had vanished in 1979 at age 16—was never formally entered into national missing person registries. The classmate assisted Tammy’s half-sister in filing an official missing person report with the Hernando County Sheriff’s Office.

Carl Koppelman, a volunteer forensic artist with the DNA Doe Project, noticed the striking resemblance between Tammy’s photo and Caledonia Jane Doe. Reference DNA swabs from Tammy’s half-sister were sent to the University of North Texas Center for Human Identification. In January 2015, UNTHSC confirmed a 100% biological match, officially identifying Tammy Jo Alexander after thirty-five years.

The Continuing Homicide Investigation & Forensic Legacy

Following the identification, Livingston County Sheriff Thomas Dougherty announced that the investigation had transitioned from an unidentified decedent inquiry to an active homicide manhunt. Detectives are utilizing advanced touch DNA and ballistic comparisons to track transient serial offenders who operated along the US Route 20 corridor in 1979.

Tammy Jo Alexander’s headstone in Greenmount Cemetery was updated with her true name, standing as an enduring symbol of community devotion and forensic perseverance.

The 1979 Livingston County Cornfield Crime Scene

On the morning of November 10, 1979, a farmer walking along a cornfield near Route 20 in the Town of Caledonia, Livingston County, New York, discovered the body of a teenage girl. The victim had been shot twice—in the head and back—with a .38 caliber handgun during a heavy overnight rainstorm. She wore a distinctive red nylon jacket, tan corduroy pants, and carried no identification.

The Livingston County Sheriff’s Office launched an extensive investigation, cataloging her clothing and jewelry. Designated ‘Caledonia Jane Doe’ or ‘Cali Doe,’ she was buried in Greenmount Cemetery in Dansville, New York, under a headstone reading ‘Unidentified Girl.’

Pollen Palynology & The 2015 DNA Doe Match

In the 2000s, forensic palynologist Dr. Vaughn Bryant analyzed pollen grains extracted from the victim’s clothing, determining that she had spent time in Southern California, Arizona, or South Florida shortly before her death. In 2014, a high school friend of Tammy Jo Alexander of Brooksville, Florida, realized Tammy had never been located and assisted her family in filing an official missing persons report.

The Hernando County Sheriff’s Office collected reference DNA from Tammy’s half-sister and entered it into the National Missing and Unidentified Persons System (NamUs). In January 2015, the Monroe County Medical Examiner’s Office in New York matched the nuclear and mitochondrial DNA profiles, officially identifying Caledonia Jane Doe as 16-year-old Tammy Jo Alexander after 35 years.

Active Serial Homicide Investigation

With Tammy Jo Alexander’s identity established, the FBI and Livingston County Sheriff’s Office reconstructed her travel path from Florida to upstate New York along the US Route 15 and Interstate 95 corridors. Detectives continue to process physical evidence using modern ballistics imaging and touch DNA extraction to identify the long-haul trucker or transient perpetrator responsible for her homicide.

Forensic Palynology, Mineralogy & Highway Corridor Profiling

The forensic investigation into the murder of Tammy Jo Alexander (Caledonia Jane Doe) combined traditional ballistics analysis with state-of-the-art environmental science. The identification of exotic Southwestern and Floridian pollen taxa adhering to her red jacket confirmed that she had hitchhiked thousands of miles across the country prior to arriving in Livingston County, New York, in November 1979.

The 2015 nuclear DNA match made possible by NamUs brought definitive resolution to her 35-year unidentified status. Today, the FBI and Livingston County Sheriff’s Office continue to use cutting-edge isotopic analysis and ballistics imaging to track down the nomadic perpetrator responsible for her death.

The Enduring Memorial in Greenmount Cemetery & Active Pursuits

Following her formal identification, a new headstone bearing the name Tammy Jo Alexander was dedicated in Greenmount Cemetery in Dansville, New York, attended by her surviving family and the dedicated law enforcement officers who refused to let her memory be forgotten.

Investigators have uploaded Tammy’s case file into the FBI’s National Crime Information Center (NCIC) and ViCAP networks, continuously screening unsolved homicides from the late 1970s along the US Route 20 corridor to identify potential serial patterns.

Livingston County Sheriff’s Cold Case Dedication & National Legacy

For over 35 years, generations of Livingston County Sheriff’s deputies visited the grave of Caledonia Jane Doe in Dansville, New York, maintaining fresh flowers and ensuring her memory remained alive. The 2015 identification of Tammy Jo Alexander through NamUs and familial DNA comparison brought an emotional resolution to one of upstate New York’s most enduring mysteries.

Today, Livingston County cold case investigators continue to work closely with the FBI and the National Center for Missing & Exploited Children, utilizing modern ballistics matching and advanced genealogy to identify the person who brought Tammy to that rural cornfield in November 1979.

Case Timeline & Forensic Milestones

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Frequently Asked Questions About This Case

Who was Caledonia Jane Doe?

Caledonia Jane Doe was an unidentified teenager found murdered in a New York cornfield in 1979, identified 35 years later in 2015 as 16-year-old Tammy Jo Alexander of Brooksville, Florida.

How was Tammy Jo Alexander finally identified in 2015?

A high school classmate prompted family members to file a missing person report in Florida. Reference DNA provided by her half-sister was matched against the 2005 exhumation DNA at the University of North Texas.

Why did the local community bury Caledonia Jane Doe in 1979?

Residents of Livingston County were moved by the tragedy of the unidentified young girl and raised funds to buy her a cemetery plot and headstone inscribed ‘Lest The World Forget.’