I found this

https://www.legacy.com/us/obituaries/delawareonline/name/winifred-strickland-obituary?id=8427494

https://www.canineprofessionals.com/international-hall-of-fame

This is actually obsolete,  she surpassed the number of AKC titles she earned after this was written.   I think she won around 220 in total,  a record still held posthumously.  The link in her obituary is not the right one.   She was a force of b nature, most people will never achieve her level of excellence but I've met some people that were jealous.   Going to dog shows with her I knew that I was with a celebrity yet she showed me a lot of respect.   I actually have her first computer, an old IBM Which she wrote her first book on.

Wynthea Kennels was located in Landenberg, PA with part of the property in Delaware near the Maryland state line.  There's a tri state section near the kennel where Pennsylvania, Maryland and Delaware state lines are just a few feet from each other.  

It sounds like you knew her well. A good friend.

Cool. Is it for sale?

She was a good friend.   We hung out too, I visited and played with her beautiful dogs, trained with her, assisted her in her practice,  went to shows with her, she mentored me, birthday parties, shopping.   Always fun.  

Her kennel is for sale and for a long time.  The person she left it to is no longer able to care for the property.   Looks like it's off the market now.  Not sure what's going on there now.  

https://www.trulia.com/p/pa/landenberg/1255-new-london-rd-landenberg-pa-19350--2017509591

Want a kennel? 

I will ask a PA friend who also has GSDs. Maybe one of her family is interested.

I see that the house is currently off the market but if a realtor got involved they may be able to find someone who has control of the property.   I'm sure they couldn't sell it because the property was overgrown.   But the house and kennel has good bones.  It will take a lot to restore the land sadly.   The heir to the property may help.