Dean is buried at Eternal Hills Memorial Park in Oceanside, CA.  Ed Mitchell wrote to Dean's sister Donna years ago. I also found Dean's niece - Holly Frey Alexander. Her Facebook id is: https://www.facebook.com/holly.freyalexander

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Ed's note

Thanks for the information on Dean Frey.  Of the 48 KIAs on my casualty card every one is important and none will ever be marginalized or forgotten, but there are a few that really were difficult for me to deal with.  Dean Frey is one of those.  He had just joined us...just a matter of days in the company (reassigned from the 1st Division down south as I recall) when he was killed.  I think he air assaulted with us into Hill 902 as the 2-501 entered Operation TEXAS Star on 5 April 70 and was killed by Machinegun fire on the 19th just south of REUP Hill while we were attacking a rather large bunker complex.  As we moved out in the attack my command group was following his platoon.  Dean had left his squad to come back near the rear of his platoon and my location for some reason but just as he arrived the NVA began firing.  I recall his immediate response to me and his "LT" as if it were yesterday, "I gotta get back down to my squad".  As he dashed down the trail the volume of small arms fire from us and the NVA was building...particularly from an NVA light Machinegun...probably an RPD.  In less than 30 seconds Dean was hit several times, perhaps no more than 25-30 meters in front of me and died almost instantly.  His death was a terrible loss for all of us for we all knew he had no experience against an NVA regular force in fortified positions in the jungled mountains.  His experience had been down south with the VC and low lands.  All of us mourned his loss and took his death very personally believing that we could have prepared him better to lead and fight in a much more dangerous environment than he had experienced.  He was a superb NCO...a solid leader with great potential.  

You also should know that I responded to his sister (I think she and Dean may have been twins) by letter after she wrote me inquiring about his death.  My letter back to her was the only letter I personally wrote to a next-of-kin.  We (Company Commanders) were specifically ordered not to respond to families of the lost but I ignored such orders and wrote her back.  I never heard from her again so I can't confirm that she ever got my letter... had to give you the story of Dean Frey's loss as you attempt to make contact with his family.

Warmest Regards and "Drive On",
Ed Mitchell