I like to have detailed maps on hand but it isn’t always practical to have USGS Quads for every place that I might find myself. That is where the DeLorme Atlas & Gazetteer comes in.
The Atlas & Gazetteer is a soft cover book of topo maps that cover an entire state. The topographic detail is minimal but it is useful. It also has excellent detail on smaller country roads that don’t appear on road maps. The books are quite large which makes them very easy to read but still very portable. They won’t quite fit in a smaller hydration type pack but should fit most multi-day hiking packs or briefcases.
These are money well spent.