Where is this light No. 6 ? I have no USCG list for Great Lakes. Must be close to Algoma, Wisconsin!
Full USCG List is here https://msi.nga.mil/Publications/USCGLL
You need vol 7 for Great Lakes, see page 186 - seems this is GENERATING STATION SOUTH INTAKE CRIB LIGHT 6
I have found the light, but I cannot translate the position 43-42-55.890N 087-41-58.380W in a GPS position for Google Maps ! :(
43.715622, -87.699514 should work