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DR. AND MRS. KARL MENNINGER ATTENDING THE SECOND ANNUAL TALLGRASS PRAIRIE NATIONAL PARK CONFERENCE HELD AT ELMDALE... NARA .tif Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Duncan Patricia Photographer File DR ANDMRS KARLMENNINGERATTENDINGTHESECONDANNUALTALLGRASSPRAIRIENATIONALPARKCONFERENCEHELDATELMDALE