You can search for maps using the Library's discovery tool, MultiSearch.
Begin by typing in your search terms;
Then, use the Resource Type filter on the left-hand side of the results screen to filter by maps. Please note, this filter will only be visible if there are map resources matching your search terms;
The maps in your results list will be either physical (these ones are stored in the ARC. Sign in to MultiSearch with your MQ ID in order to request them);