I'll address this from an "official" standpoint with regards to the forum...
Track plans, in and of themselves, are not wepaons; one cannot actually use the track without access to rail equipment; and the ability to vandalize the track structure does not require a railroad map but simply access to the railroad itself....
Wigwagfan, from my point of view, that was the most concise, intelligent and logical explanation I've ever seen concerning what some, this writer included; may consider "sensitive" information. I am sure there are those in law enforcement and Homeland Security who will disagree, but that is another problem altogether!
To checkthedoorlight; your initial drawing of GCT is great! I've never seen any schematic representation of GCT before, so I was impressed! I have seen a diagram, albeit extremely poor quality, of NYP; but the link provided by CarterB was the best quality diagram of NYP I've seen.
I, too had some original concerns about the posting of the NYP diagrams. I wondered about posting copies of some other information I have on the forum, and up to now decided against it in the interests of "security". I will have to re-think that now...
Checkthedoorlight, I wish you great success in your plans! What I would want to see along with the track charts are signal and interlocking plans... A lot of the original PRR (now NEC) diagrams are posted here:
These may be an excellent place to start because a lot of the information is still valid or only has minor changes; with the exception of work like Secaucus Junction and ther MidtownDirect connections to the NEC; also the Newark Airport station.
Unfortunately at the above-referenced site, the one set of drawings Mark Bej was unable to come up with were the interlocking drawings for Penn Station New York! Those would be the "Holy Grail" for those of us with an interest in signaling and interlocking to find... Does anyone know anyone who has copies that could be scanned?