I was looking through my database at suspect descriptions and I don't have very many listed prior to 1975.
But one thing caught my eye.
Sharron Prior's family member has a website for her with articles posted about Sharron's murder. From the time of her abduction when she was last seen at 7:15pm on her way to a pizzeria, a woman was attacked in the same area. She was attacked in the middle of Wellington Street, which is the street the pizzeria Sharron was going was located about 7:00pm. This is 15 minutes before Sharron left her home five blocks away. She describes her attacker as about 29 years of age, 6'0" tall and about 200lbs. He had dark hair, blue eyes and a squared-off mustache. He was wearing blue jeans with rolled up cuffs, a blue ski jacket and black pointy toed shoes. He was run off by a 12 year-old boy who heard the woman's screams and ran toward the attacker yelling. The man jumped high and ran off. The woman was cut and thrown and went to a local home to phone police.
I gather this is included on Sharron's website because of the proximity in location and time to Sharron's abduction and her family feels it is related. Beside Sharron's body, police found a size 17 neck, 34" arms white shirt which indicates the suspect is about 6' tall the same height as the woman's attacker.
The reason I post this here is because of the similarities between Sharron and Karen's murder. This tentative/possible suspect appears to match the description of Karen's killer.
Dark hair - Karen and woman attacked
Blue eyes - woman attacked
6'0" tall - All three (+/- 2")
190lbs - Karen and woman attacked (+/- 10lbs)
Ski jacket - Karen and woman attacked (Karen - green ski jacket - woman attacked - blue ski jacket)
Jeans - woman attacked
25 years-old - Karen and woman attacked - (Karen 25 - woman attacked - 29)
Item of clothing found near body - Karen and woman attacked (Karen - green ski jacket - Sharron - white shirt)
Another very interesting similarity is both Karen and Sharron were found with no pants or panties on. They were both wearing tops and socks and shoes (Karen only one shoe and sock) Sharron's bottoms were found about 6 feet from her body and I do not know if police found Karen's other sock and shoe, bottoms or jacket.
Both Karen and Sharron were traumatically beaten, they both died from head trauma/skull fractures. They were both sexually assaulted, both had an item of clothing not theirs found near their bodies, they were both found with the same clothes missing, they were both found in relative easy access areas, they were both abducted from walking.
The other similarity is the murders happened within three weeks of each other. But 3,000 miles apart. They were abducted during dinner hours - between 5-7:15pm. Sharron was abducted the day before Easter, on a Saturday. Karen, a Thursday three weeks later. Both were within 2 days of a full moon, both were on significant occult dates. Many similarities.
There are differences too, like it is likely Sharron's killer drove a car, police have a tire track mark as well as a shoe print. The tire tread is a new Goodyear tire which might point to the type of car. What is a bit troublesome is the shoe print indicates a size 8-1/2 shoe. The police said in the article that the shirt indicates a 6'0" tall guy due to size of shirt, but then a year later the article says the killer was probably a "heavy" person. Large shirt (neck size) but smaller shoe. A 5'8" person maybe, 200lbs, size 8-1/2 shoe, does that make sense?
The shoe size is a discrepancy to the original possible description of 6'0" based on shirt size.
Here's the link to Sharron's record on Unsolved
http://www.unsolvedcanada.ca/index.php/topic,262.0.htmland the website her family member put up
http://www.sharronprior.com/