FL FL - Cynthia Gooding, 16, & Teresa Alfonso, 12, Marathon, 3 Sept 1974

[Diane Redfern]

Gerald Stano - Wikipedia

en.wikipedia.org

• Cathy Lee Scharf, 17, was a hitchhiker from Port Orange whose body was found on January 19, 1974, by hunters in the Merritt Island National Wildlife Refuge near Titusville, Florida.She had been fatally stabbed and strangled between December 1973 and January 1974
• On November 24, 1974, a woman's decomposed body was found lying face-down on an embankment about 50 feet behind the Interstate Mall in Altamonte, Florida. It was determined she had been killed in the same spot that her body was dumped. She had been stabbed twice and was possibly sexually assaulted, as her underwear was pulled down and her shirt was pulled up. In 1982, Stano confessed to her murder. He said he had picked her up while she was hitchhiking on the Interstate 4, had argued with her, and ended up murdering her. She remains unidentified and is known as the Seminole County Jane Doe.

There's no mention about his whereabouts between those two crimes.

However, I think we should not forget this guy:

Billy Mansfield - Wikipedia

en.wikipedia.org

MANSFIELD, William “Billy” Jr.

United States of America MANSFIELD Jr. William “Billy” Active from 1975-1980 in Florida and California Dispatch Map Books Videos & Podcasts Statistics DID YOU KNOW… Dop…

serialdispatches.com

It appears one of the victims found in Weeki Wachee has been identified as Theresa Fillingim; according to Unidentified wiki:
The victim was estimated to have been killed between one and three years prior to the discovery of her remains, although her killer claimed he began murdering women as early as 1975. Missing individuals including Cynthia Gooding and Teresa Alfonso were excluded as potential identities. Because of the condition of her skeletonized remains, the only physical detail released was her estimated height, determined to be around 5'4.
However, the case is still on NamUs:

The National Missing and Unidentified Persons System (NamUs)

By bringing people, information, forensic science and technology together, NamUs helps resolve cases.

www.namus.gov

And this other girl is unidentified:

The National Missing and Unidentified Persons System (NamUs)

By bringing people, information, forensic science and technology together, NamUs helps resolve cases.

www.namus.gov

 

[theshadow45]

Bumping, today is Cynthia’s birthday.

 

[theshadow45]

Cynthia and Teresa have been missing for 51 years today.