wheels on NYC hudsons

Hi, I´m Christian from Germany,
[?]can anyone show me drawings or blueprints of Scullin- disc wheels from the NYC hudson.Read this: I know there where three typs of wheels in use: spoken wheels for the first run, the half of the engines had boxpok wheels from General Steel Castings and some had Scullin-disc wheels exspecially the engines for the 20th Century Limited, or the Empire State Express later the Mercury.These wheels had some holes on it but I don´t know where they locate. I hope someone can help me! Thanks forwart!

http://www.railarchive.net/nyccollection/nyc5450rdl.htm