The guide is exhaustively thorough. Almost every page has a photo or a drawing with a tidbit of flora, fauna or cultural info. There are also explanations, by experts, of everything from the area’s famous pictographs to the predation techniques of the valley’s ant lion inhabitants.
The Tyee

Well-written guidebooks are worth their weight in time—as in, time well spent consulting one in advance of an adventure. That’s particularly true here in B.C., where, from one year to the next, roads are washed out by monsoon rains and new trails appear under the aegis of local stewardship groups. White devotes an entire chapter in his exhaustively researched Stein Valley Wilderness Guidebook to the larger topic of the politics of wilderness protection in this decade, as focused through that lens. Suffice it to say that what was achieved in the Stein has come to serve as a template for future successes.
The Georgia Straight

The long, highly publicized battle to save B.C.’s Stein Valley ended in 1995 with its declaration as a 107,191-hectare provincial park. By 2000, the definitive guidebook on the area was no longer available and the park continued to drop off backpackers’ radar. Re-enter author Gordon White and his revised Stein Valley Wilderness Guidebook, a great way to rekindle interest in a glorious wilderness on the Lower Mainland’s doorstep.
Vancouver Saun

I was a park ranger based out of the Lytton area for a summer back in 1984. It was like discovering an addictive sweet with the ability to discover one little area after another. I would go to my guidebook and visit new areas I hadn’t been to.
ClubTread.com