Investigators in northern Texas are asking the public for help in learning more about a former Lancaster County resident and how she turned up dead there decades ago.

The Jack County Sheriff’s Office and Texas Rangers identified the victim of a homicide which occurred near Wizard Wells, Texas, in 1984 as Roberta “Berta” Mumma, a former Lancaster County resident and Ephrata High School graduate.

Roberta “Berta” Mumma’s skeletal remains were discovered in a remote area in Jack County over 40 years ago, but her identity remained a mystery until 2024. Roberta “Berta” Mumma was identified using advanced forensic techniques and DNA analysis.

The victim identified as Roberta “Berta” Mumma was 25 years old at the time of her death. The Jack County Sheriff’s Office and Texas Rangers are actively investigating this cold case and seeking justice for Roberta “Berta” Mumma.  Roberta “Berta” Mumma’s last known location before the discovery of her remains was in Tennessee. Texas Rangers want to speak with anyone who knew Roberta “Berta” Mumma when she was in Tennessee or Texas. 

Furthermore, authorities urge anyone with information about Roberta “Berta” Mumma or the circumstances surrounding her death to come forward. The smallest detail could be crucial in solving this case and bringing closure to Roberta “Berta” Mumma’s loved ones.

The Jack County Sheriff’s Office and Texas Rangers are committed to pursuing justice for Roberta “Berta” Mumma and ensuring those responsible for her death are held accountable.

A yearbook photograph and age progression photo of Roberta “Berta” Mumma have been included in this post.

For more information or to provide tips, please contact Texas Ranger Michael Schraub at 940-549-0549  michael.schraub@dps.texas.gov  or Jack County Sheriff's Office at 940-567-2161 or chauger@jackcounty.texas.gov   

Tips can also be submitted through the Submit a Tip button below. Tipsters can remain anonymous and do not have to give their names.

Information which leads to the arrest and conviction of this suspect could result in a reward through Crime Stoppers. Rewards can be given anonymously.