Here is the list of PRR-owned (post 1948) heavyweight Pullmans:
8981 14Sec Andrew Carnegie I 3958A 6376 2 2411 PRR
8982 14Sec Andrew Squire I 3958A 6357 2 2411 PRR
8983 14Sec Bartholomew Penrose I 3958A 6376 2 2411 PRR
8984 14Sec Cyrus H. McCormick I 3958A 6357 2 2411 PRR
8985 14Sec David Sinton I 3958A 6357 2 2411 PRR
8986 14Sec Elbert H. Gary I 3958A 6376 2 2411 PRR
8987 14Sec George Rogers Clark I 3958A 6357 2 2411 PRR
8988 14Sec Henry Watterson I 3958A 6357 2 2411 PRR
8989 14Sec Marcus A. Hanna I 3958A 6376 2 2411 PRR
8990 14Sec New Nicollet I 3958A 6285 2 2411 Pull
8991 14Sec Potter Palmer I 3958A 6357 2 2411 PRR
8992 14Sec Salmon P. Chase I 3958A 6357 2 2411 PRR
8993 14Sec Samuel Morse I 3958 6012 2 2410A Pull
8994 14Sec Thomas A. Hendricks I 3958A 6357 2 2411 PRR
Full list can be found here:
http://prr.railfan.net/passenger/GSPEAR/GSPEAR_PRR_Sleeper_Car.htm