Identity of murder victims in cold case released

SHERIDAN (WNE) — On March 1, 1992, an unidentified female, referred to as Bitter Creek Betty, was found approximately 40 miles east of Rock Springs in Sweetwater County, near Interstate 80. 

Just over a month later, on April 13, 1992, the body of another unknown deceased female, referred to as I-90 Jane Doe, was discovered near milepost five off the west side of Interstate 90 in Sheridan County. 

Initial investigations into both cases continued for years without a positive identification of either victim or a suspect. 

A significant breakthrough occurred in 2012 when a male DNA profile found on evidence related to the I-90 Jane Doe case was matched to a male DNA profile developed from evidence in the Bitter Creek Betty investigation, conclusively linking the two Wyoming homicides to the same DNA contributor.

Through forensic genetic genealogy, a recent advancement in forensic investigations, these long-unidentified victims were identified. 

Bitter Creek Betty has been officially identified as Irene Vasquez. The identification was made possible through DNA matching with a family member. 

Similarly, I-90 Jane Doe was identified as Cindi Arleen Estrada, confirmed by DNA matching with her biological mother.

In 2019, the male DNA profile from the Wyoming cases was linked to DNA obtained during a 1991 homicide investigation in Tennessee, that of Pamela Rose Aldridge McCall. 

Subsequent investigations provided leads that ultimately identified Clark Perry Baldwin as the unknown DNA contributor. 

Baldwin was arrested on May 6, 2020, in Iowa, on warrants for murder in Tennessee and Wyoming. Baldwin was recently convicted of the first-degree murder of McCall in Maury County, Tennessee, on May 5 and sentenced to life in prison. 

He will now be extradited to Wyoming to face charges for the murders of the two Wyoming women. 

This story was published on July 18, 2025.