A listing of most PC public timetables is available here. A complete listing of PC public timetables was compiled by Charles French and was included as a supplement to Volume 3, Issue 1 (April 2002) of the Penn Central Railroad Historical Society's POST publication. (Back issues of the POST can be ordered from the PCRRHS.
Here is the cover of PC timetable Form 1, the East/West public timetable, dated March 3, 1971, showing routes served. Notice that the PC emblems on the timetables have a "red C" on them, even though PC had been painting its equipment with the all-white logo since the summer of 1968. (92 K)