| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| CSON | CLAWSON[3733] | TR.AE | S | USA:ND |
| CENS | CLEMENS[3733] | TR.AE | W | USA |
| CET | CLEMENT[3733] | TR.AE | W | NLD |
| CRED | CLEO-RED[3733] | TR.AE | W | USA |
| CWHT | CLEO-WHITE[3733] | TR.AE | W | USA |
| CLEO74 | CLEOPATRA-74[3733] | TR.AE | S | MEX |
| CLD,2 | CLOUD[3733] | TR.AE | W | USA:KS |
| CBY,2 | COLBY[3733] | TR.AE | W | USA:KS |
| COL,3 | COLLIN[3733] | TR.AE | W | USA:TX |
| CBS | COLUMBUS[3733] | TR.AE | S | CAN |
| CBCK | COMEBACK[3733] | TR.AE | S | AUS |
| CMT,2 | COMPTON[3733] | TR.AE | W | USA:Indiana |
| CON,2 | CONDOR[3733] | TR.AE | S | AUS |
| CPR,2 | COPPER[3733] | TR.AE | S | USA |
| CORD | CORDILLERA[3733] | TR.AE | S | PRY |
| CADO,2 | CORONADO[3733] | TR.AE | W | USA |
| CORN,2 | CORONATION[3733] | TR.AE | S | CAN |
| CCS | CORRECAMINOS[3733] | TR.AE | S | MEX |
| CORWA | CORWA-1[3733] | TR.AE | W | USA |
| CN24 | COWRA-24[3733] | TR.AE | S | AUS |