I'm spending the week in Sandusky OH. what was the arrangement of trackage along the waterfront? I'm seeing a bunch of trackage on old maps that is clearly no longer.
IIRC, from east to west:
LS&MS (NYC) from the mainline to the waterfront;
B&O original mainline on a south / north line that crossed the NYC mainline at CP-240;
Big Four - nee Mad River & Lake Erie (NYC) from SW to NE that crossed the NYC mainline at Bay Jct. - CP-242; and
CS&H (PRR) also SW to NE that also crossed at Bay Jct. - CP-242.
At the waterfront, there was a joint trackage arrangement.
LE&W (NKP) crossed the CS&H at Bay Jct. and used shared trackage to get to the waterfront. The NKP yard was on the south side of the NYC mainline.
At the east end of the waterfront there is an historical marker for the original B&O mainline.
Hope this helps.