I did not find anything about Maureen Hattem´s case.
On November 21st, 1971 Maureen was kidnapped at gunpoint while she was with her boyfriend. Her body was found on December.
Here is a link to an article from the Tuscaloosa News December 5th, 1971
The Tuscaloosa News - Búsqueda en el archivo de Google Noticias
Here is a composite sketch of the kidnapper:
I am quoting also a newspaper:
"The site was about V miles from where she and a companion, Thomas P. Smalley, 23, were forced out of a vehicle at gunpoint Nov. 21. Smalley, an airman at March Air Force Base in Hiverside, told deputies he and Miss Hattem were hitchhiking to the base that night and were picked up in Anaheim by a man in a tan four-wheel-drive vehicle. The man drove past the turnof£ to the base, stopped on a steep foothill trail, and brandished a pistol at them as he ordered them out, Smalley said. The airman said he surrendered his wallet and then the gunman fired a shot at him from close range but missed. SMALLEY said he fell backwards into a ravine but saw the man force Miss Hattem into the vehicle at gunpoint and speed away. Miss Hattem was a student at San Fernando Valley State College in Northridge. Her parents, Mr. and Mrs. Maurice Hattem, published the open letter to the kidnaper .Friday, hoping he would learn he hadn't killed Smalley and thus might spar a their daughter's life. Deputies said Miss Hattem's clothes were not torn and her body was not bruised, indicating there had been no major struggle. Because of decomposition, the autopsy did not confirm that she had been raped."
Some more links:
The Tuscaloosa News - Búsqueda en el archivo de Google Noticias
St. Petersburg Times - Búsqueda en el archivo de Google Noticias
On November 21st, 1971 Maureen was kidnapped at gunpoint while she was with her boyfriend. Her body was found on December.
Here is a link to an article from the Tuscaloosa News December 5th, 1971
The Tuscaloosa News - Búsqueda en el archivo de Google Noticias
Here is a composite sketch of the kidnapper:

I am quoting also a newspaper:
"The site was about V miles from where she and a companion, Thomas P. Smalley, 23, were forced out of a vehicle at gunpoint Nov. 21. Smalley, an airman at March Air Force Base in Hiverside, told deputies he and Miss Hattem were hitchhiking to the base that night and were picked up in Anaheim by a man in a tan four-wheel-drive vehicle. The man drove past the turnof£ to the base, stopped on a steep foothill trail, and brandished a pistol at them as he ordered them out, Smalley said. The airman said he surrendered his wallet and then the gunman fired a shot at him from close range but missed. SMALLEY said he fell backwards into a ravine but saw the man force Miss Hattem into the vehicle at gunpoint and speed away. Miss Hattem was a student at San Fernando Valley State College in Northridge. Her parents, Mr. and Mrs. Maurice Hattem, published the open letter to the kidnaper .Friday, hoping he would learn he hadn't killed Smalley and thus might spar a their daughter's life. Deputies said Miss Hattem's clothes were not torn and her body was not bruised, indicating there had been no major struggle. Because of decomposition, the autopsy did not confirm that she had been raped."
Some more links:
The Tuscaloosa News - Búsqueda en el archivo de Google Noticias
St. Petersburg Times - Búsqueda en el archivo de Google Noticias