Recently Added Maps

Recently Added Maps for Download

Bethalto-SG map
36" × 58" double map sheet; sheet 1 contains map and legend; sheet 2 contains descriptive text, inset map, data table and cross sections (3) Updated: January 12, 2017
Alton SG map
32" × 88" map sheet; includes legend, descriptive text, inset maps (2), photographs (3) and cross sections (2) Updated: January 12, 2017