| Reference | {Deposit:: TOWN OF ELDORA IS POINT OF REFERENCE}{Deposit:: FOLLOWING CLAY PRODUCTS MANUFACTURERS ALSO OPERATED IN THE}{Deposit:: VICINITY OF ELDORA- ELDORA TILE WORKS, X-Y-Z BRICK AND}{Deposit:: TILE CO., E D PERKINS}{Deposit:: IOWA GEOLOGICAL SURVEY, ANNUAL REPORT 1899, VOL. 10, PP 292-294} |