| Reference | {Deposit:: ST LOUIS FORMATION}{Deposit:: LOCATION INCLUDES SEVERAL OLD QUARRIES IN WEST HALF SEC. 13,}{Deposit:: SW SEC. 3, AND SECS. 14 AND 16}{Deposit:: IOWA ST HWY COMM AGGREGATE RESOURCE LISTING 1977}{Deposit:: IOWA GEOLOGICAL SURVEY, ANNUAL REPORT 1893, VOL. 3, P. 388.} |