Where to find information on map on CNW in 1992 in Wisconsin

I am doing some family research and have found that my great grandfather died in a tragic accident in the Milwaukee WI area at thye .. "Place known as the NOrthwestern-North Cape Roaad at St. Martins's corssing on the outskirts of Milwaukee...."

I know that there is a small community of St Martins so I know the general area .. but wondering if I could find a map of this rail line in 1922.

Any ideas or suggestions.
Thanks to all!
~J

Start with www.cnwhs.org. Don't recall seeing a map, but I'm sure you can find a link to ask for more info.

Take a look here:

http://www.historicmapworks.com/

It may not be on a railroad map or the exact year that you want, but might find what you are looking for.