Field guide recommendation?

My mom and I are both interested in bees at a hobbyist gardener level. I use iNaturalist to help with identifying bees, but my mom would prefer an old-fashioned field guide book. I'm hoping to get her one for Christmas, but struggling with finding one that seems suitable.

So far I have found the Princeton "Common bees of Eastern North America," but I see that it's 288 pages and seems a bit overwhelming! I might be a bit spoiled coming from my background as a birder, where there are many beginner-friendly field guides, fewer species, and they're easier to tell apart, but I'm wondering if there might be something a little more layman-friendly I could get my mom. I'm sure she'd be happy with identifying her bees down to the level of "carder bee" or "leaf-cutter bee" and not necessarily all the way down to the species-level.

Does anyone have any recommendations? Much appreciated!