Mike,
?
If the diagram of the location is present at the location (on the facia, or perhaps lighting valance), then IHMO, the SPINS number could easily be presented on the JMRI paperwork, and should offer little trouble for most folks to get a car spotted.
?
Phil Klein uses a modified version of this idea on his BNSF Seattle Sub layout...the example here is Black River, WA and the Selland Co. auto-ramp tracks, with the track numbers listed,
?
?
His track charts exist on small facia-mounted Kindle tablet JMRI panels, that also control the turnouts at the location.
?
Pete Johnson
