Looking for location of area named "Crest"

A friend of mine used to climb at an area named "Crest" about 30 years ago. She says it was east of San Diego about an hour. She has fond memories and is interested in stopping on a future trip but can't remember exactly where it is.

This area isn't located on Mountain Project (from what I can tell) and Googling only found vague references to it.

Does anyone have GPS coordinates for this area?

Thank you in advance!

Anna

I've climbed there once or twice ~15 years ago, but I don't remember how to get there and I don't own a San Diego guidebook anymore. Here's a little discussion on it: http://www.supertopo.com/climbers-forum/3187101/Is-Bouldering-Still-Possible-in-Crest-CA

Thank you Brandon. I found that Supertopo thread in my previous Google search. It looks like the area was also possibly known as “La Cresta”.

Is anyone with a San Diego area guidebook able to check for this area in the book for me?

PMed 

It was also called Singing Hills. It is out La Mesa way I believe- it was about 30 years ago that I climbed there. I can look to see if I have any guidebook material- there was some copy of something homemade with routes, I think. I think that it is all private property now?? 

I just got home from a road trip and looked in my bookcase. PM me if you want to buy it. 

Thank you everyone for taking the time to reply to my question and to check your book shelves! 

I just purchased the old guide book for the area from Phylp which will help a ton if my friend gets there to visit.

if you want to sell it afterwards let me know.  i am interested in the area.  thanks!

@slim, I'm happy to send photos of the book's pages when it arrives. PM me.

Thought a lot of that land is private now, that is what has kept people away?