| ALASKA | PTH | PORT HEIDEN |
| ALASKA | PTU | PLATINUM |
| CALIFORNIA | PTV | PORTERVILLE MUNI |
| KANSAS | PTS | PITTSBURG ATKINSON MUNI |
| KANSAS | PTT | PRATT INDUSTRIAL |
| LOUISIANA | PTN | PATTERSON HARRY P. WILLIAMS MEM |
| MICHIGAN | PTK | PONTIAC OAKLAND CO INTL |
| NEW YORK | PTD | POTSDAM MUNI (DAMON FLD) |
| PENNSYLVANIA | PTW | POTTSTOWN LIMERICK |
| VIRGINIA | PTB | PETERSBURG DINWIDDIE CO |