User:Tonestertm/CRS grid bookmarklet
Round 2 will include some rough boundary checking, to be sure you're in California, as the state hasn't been magnanimous enough to provide FC maps for OR, NV, AZ or MX.
Also, I can currently link directly to the particular pdf map, but haven't figured how to account for areas where there is no "minor grid" map. In addition, the decision to leave the table as a clunky-looking full-size tab was deliberate, owing to the idea that you may need to access an adjacent map; this seems to me easier than the state's approach, where the tiny window disappears behind the main browser window, but I'm interested in others' thoughts. Feedback will be appreciated.