Here are some more.
BN = Burlington Northern RR
C&S = Colorado & Southern (subsidiary of CB&Q)
FW&D = Fort Worth & Denver (subsidiary of CB&Q)
H&St Joe = Hannibal & St Joseph RR (absorbed into CB&Q)
QO&KC = Quincy, Omaha, & Kansas City RR. OK Line. Hogback Road. Absorbed by CB&Q.
K-Line also was CB&Q line between Keokuk IA and St Louis MO
CZ = California Zephyr, vista dome streamliner operated between Chicago IL & Oakland CA by CB&Q, D&RGW, and WP
PZ = Pioneer Zephyr. First of CB&Q's diesel powered stainless steel streamliners. Preserved at the Chicago Museum of Science & Industry
DZ = Denver Zephyr
TCZ = Twin Cities Zephyr
TZ = Texas Zephyr
OSZ = Ozark State Zephyr
GPZ = General Pershing Zerphy
KCZ = Kansas City Zephyr
SSZ = Silver Streak Zephyr
NZ = Nebraska Zephyr
SHZ = Sam Houston Zephyr
ZR = Zephyr Rocket. Joint train operated by CB&Q and CRI&P (Chicago, Rock Island, & Pacific)
MTZ = Mark Twain Zephyr
Thanks the n advance !!!