One human poll made up the 1999 National Association of Intercollegiate Athletics (NAIA) football rankings, sometimes called the NAIA Coaches' Poll or the football ratings. Once the regular season was complete, the NAIA sponsored a playoff to determine the year's national champion. It is not known whether a final poll was taken after completion of the 1999 NAIA Football National Championship, won by Northwestern Oklahoma State.
The poll release dates were:
References
1999 NAIA football rankings Wikipedia(Text) CC BY-SA