0000875357-99-000006 8-K 1 19990819 5 19990819 BOK FINANCIAL CORP ET AL 0000875357 6021 731373454 OK 1231 8-K 34 000-19341 99696315 BANK OF OKLAHOMA TOWER PO BOX 2300 TULSA OK 74192 9185886000 BANK OF OKLAHOMA TOWER P O BOX 2300 TULSA OK 74192 8-K 1 000087535799000006-001-seq1-8-k.txt OTHER EVENTS