For what it's worth:
(1) Elk Cove: In the Field Guide for Elk Cove Trailhead, the starting elevation is listed as 3600. I believe the hike starts at 3,250 feet (Sullivan and others), not 3600. The Field Guide for Elk Cove Hike uses the correct 3250 starting point so the two Field Guide pages aren't consistent.
(2) Eden Park: The Field Guide for Eden Park says it is 3 miles from the Vista Ridge Trailhead to Eden Park. The Field Guide for Cairn Basin says it is 3.3 miles from the Vista Ridge Trailhead to Eden Park (Sullivan says it is 4 miles, but apparently that's to the far end of Eden Park).
I know these two corrections are trivial but I figure you probably want Field Guide pages to match.