I am a sucker for maps, and I thought "Mapping Indiana" did a wonderful job sharing the scope of the Indiana Historical Society's map collection. The offerings here are broad by definition, encompassing everything from early, inaccurate maps from European cartographers to geological maps, town surveys, postal routes and more.
I am particularly fond of the "Birds-Eye" maps of various cities from the late 1800s/early 1900s, but there are a number of fun maps here, including Native American place names and maps of Indiana writers. The mapped locations vary pretty widely, both in subject matter and geographically across the state, so it's unlikely that every map will appeal to every reader. If you're interested in Indiana geography, though, you're sure to find some "wows" in these pages.