0001026608-00-000014 DEF 14A 1 20000523 20000425 AAON INC 0000824142 3585 870448736 NV 1231 DEF 14A 34 000-18953 607634 2425 SOUTH YUKON TULSA OK 74107*1300 9185832266 2425 SOUTH YUKON 2425 SOUTH YUKON TULSA OK 74107 DIAMOND HEAD RESOURCES INC 19900808 DEF 14A 1 000102660800000014-001-seq1-def-14a.txt DEFINITIVE PROXY STATEMENT