That Picea Breweriana is a fine specimen Trish!
I have an excellent book on Conifers.
Try your local library and look for a book called simply Conifers, by D.M. van Gelderen and J.R.P. van Hoey Smith.
If they don't have it, ask them to try other libraries for you.
Its an excellent resource.
Just had a quick look up.
I think your conifer is a Picea. It would require close inspection (by an expert
) for a positive ID.
Those drooping cones are a good "clue".
They look quite "red" in your photo. From memory, was that their true colour?
Here's some "close fits".
Picea pungens 'Hoto'
Picea jezoensis
Picea jezoensis var. hondoensis
Picea likiangensis
Have fun!