Here is a quick guide to in-house maps located in the Government Docs section of the library. The Maps are stored in one of two locations. Either in flat-storage in the cabinets or folded up in boxes on the shelves. Both of these are located next to each other.
There are a variety of folded maps located via SuDoc. Here are some links to digital copies of several of them.
There is a wide variety of government maps available:
Where to find government maps that are cataloged in MERLIN and which show a location in Ellis Library.