Bridge River Cones location/range

I just checked the lat-long you gave for the Bridge River Cones; it's in the Gunn Valley to the west of Lower Taseko Lake, near Yohetta Valley - north of the Tchaikazan.  That location, if it's correct, is in the Chilcotin Ranges (which may or may not be a subset of the Pacific Ranges depending on who you're talking to).   Can you located them more precisely; the boundary between the Pacific Ranges and Chilcotin Ranges isn't exact in Holland, and I'll have to refer to them somewhere; the crest of the Coast Mountains in that area is definitely Pacific Ranges; where the "fall-off" is I'll have to read Holland again to find out; if the Cones were in the upper Bridge River itself they might be considered Pacific Ranges; although the north bank of that river is part of the Chilcotin Ranges (because the Dickson Range is); I'd say the boundary - maybe - is the pass between the Lord and Bridge Rivers on the ENE side of the Lillooet Icecap - 50°56'11"-123°31'57" , although NW from there sort of NW across the Lord, Falls and Tchaikazan Rivers; Mount Monmouth is definitely in the Pacific Ranges, to the west of that line...; anything north of the Yohetta Valley, or the lower Tchaikazan, as your current Bridge River Cones location is, is in the Chilcotin Ranges for sure.