0001193125-04-022796 SC 13G/A 1 20040213 COLUMBIA ACORN TRUST WAM ACQUISITIONS GP, INC. CLARCOR INC 0000020740 3714 360922490 DE 1130 SC 13G/A 34 005-40394 04597291 2323 SIXTH ST PO BOX 7007 ROCKFORD IL 61125 8159628867 2323 SIXTH STREET ROCKFORD IL 61125 CLARK J L MANUFACTURING CO /DE/ 19871001 LIBERTY WANGER ASSET MANAGEMENT LP 0000908733 0000 363820584 DE 1231 SC 13G/A 227 W MONROE STREET SUITE 3000 CHICAGO IL 60606 3126349230 227 W MONROE ST STE 3000 CHICAGO IL 60606 WANGER ASSET MANAGEMENT LP 19990108 SC 13G/A 1 dsc13ga.txt SCHEDULE 13G/A