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9/23/2026 12:02 PM 693619 USGS-IA_1-KEOKUK-Vertical_1983.pdf
9/23/2026 12:02 PM 583572 USGS-IA_10-CENTERVILLE-Vertical_1966.pdf
9/23/2026 12:02 PM 698686 USGS-IA_100-DES_MOINES-Vertical_1972.pdf
9/23/2026 12:02 PM 780037 USGS-IA_101-WAUKEE-Vertical_1965.pdf
9/23/2026 12:02 PM 365109 USGS-IA_102-ADEL-Vertical_1960.pdf
9/23/2026 12:02 PM 436337 USGS-IA_103-PANORA-Vertical_1979.pdf
9/23/2026 12:02 PM 590866 USGS-IA_104-CASEY-Vertical_1969.pdf
9/23/2026 12:02 PM 625508 USGS-IA_105-AUDUBON-Vertical_1969.pdf
9/23/2026 12:02 PM 82593 USGS-IA_106-KIMBALLTON-Vertical_1976.pdf
9/23/2026 12:02 PM 81049 USGS-IA_107-HARLAN-Vertical_1976.pdf
9/23/2026 12:02 PM 243606 USGS-IA_108-PERSIA-Vertical_1966.pdf
9/23/2026 12:02 PM 473570 USGS-IA_109-MISSOURI_VALLEY-Vertical_1966.pdf
9/23/2026 12:02 PM 630048 USGS-IA_11-SEYMOUR-Vertical_1965.pdf
9/23/2026 12:02 PM 176852 USGS-IA_110-BLAIR-Vertical_1966.pdf
9/23/2026 12:02 PM 318894 USGS-IA_111-CLINTON-Vertical_1967.pdf
9/23/2026 12:02 PM 319777 USGS-IA_112-GOOSE_LAKE-Vertical_1978.pdf
9/23/2026 12:02 PM 220474 USGS-IA_113-DEWITT-Vertical_1978.pdf
9/23/2026 12:02 PM 282053 USGS-IA_114-WHEATLAND-Vertical_1978.pdf
9/23/2026 12:02 PM 427886 USGS-IA_115-TIPTON-Vertical_1978.pdf
9/23/2026 12:02 PM 665425 USGS-IA_116-MECHANICSVILLE-Vertical_1971.pdf
9/23/2026 12:02 PM 522347 USGS-IA_117-CEDAR_RAPIDS-Vertical_1966.pdf
9/23/2026 12:02 PM 451853 USGS-IA_118-AMANA-Vertical_1966.pdf
9/23/2026 12:02 PM 680642 USGS-IA_119-MARENGO-Vertical_1966.pdf
9/23/2026 12:02 PM 751811 USGS-IA_12-ALLERTON-Vertical_1965.pdf
9/23/2026 12:02 PM 572075 USGS-IA_120-BELLE_PLAINE-Vertical_1970.pdf
9/23/2026 12:02 PM 57810 USGS-IA_121-TAMA-Vertical_1976.pdf
9/23/2026 12:02 PM 134426 USGS-IA_122-FERGUSON-Vertical_1976.pdf
9/25/2026 7:44 AM 42606 USGS-IA_123-RHODES-Vertical_19xx-UNKN.pdf
9/23/2026 12:02 PM 157314 USGS-IA_124-MAXWELL-Vertical_1972.pdf
9/23/2026 12:02 PM 211949 USGS-IA_125-SLATER-Vertical_1965.pdf
9/23/2026 12:02 PM 866296 USGS-IA_126-MADRID-Vertical_1965.pdf
9/23/2026 12:02 PM 620630 USGS-IA_127-PERRY-Vertical_1965.pdf
9/23/2026 12:02 PM 568536 USGS-IA_128-BAGLEY-Vertical_1980.pdf
9/23/2026 12:02 PM 627425 USGS-IA_129-COON_RAPIDS-Vertical_1969.pdf
9/23/2026 12:02 PM 601065 USGS-IA_13-LINEVILLE-Vertical_1964.pdf
9/23/2026 12:02 PM 613440 USGS-IA_130-DEDHAM-Vertical_1969.pdf
9/23/2026 12:02 PM 254279 USGS-IA_131-MANNING-Vertical_1975.pdf
9/23/2026 12:02 PM 193463 USGS-IA_132-EARLING-Vertical_1975.pdf
9/23/2026 12:02 PM 265966 USGS-IA_133-DUNLAP-Vertical_1971.pdf
9/23/2026 12:02 PM 277958 USGS-IA_134-MOOREHEAD-Vertical_1971.pdf
9/23/2026 12:02 PM 421080 USGS-IA_136-SAVANNA-Vertical_1983.pdf
9/23/2026 12:02 PM 513820 USGS-IA_137-MILES-Vertical_1967_1978.pdf
9/23/2026 12:02 PM 488661 USGS-IA_138-MAQUOKETA-Vertical_1978.pdf
9/23/2026 12:02 PM 482035 USGS-IA_139-BALDWIN-Vertical_1978.pdf
9/23/2026 12:02 PM 464093 USGS-IA_14-LAMONI-Vertical_1979.pdf
9/23/2026 12:02 PM 370701 USGS-IA_140-MONTICELLO-Vertical_1978.pdf
9/23/2026 12:02 PM 455532 USGS-IA_141-ANAMOSA-Vertical_1974.pdf
9/23/2026 12:02 PM 472296 USGS-IA_142-MARION-Vertical_1966.pdf
9/23/2026 12:02 PM 446664 USGS-IA_143-SHELLSBURG-Vertical_1966.pdf
9/23/2026 12:02 PM 232655 USGS-IA_144-VINTON-Vertical_1970.pdf
9/23/2026 12:02 PM 258880 USGS-IA_145-TRAER-Vertical_1970.pdf
9/23/2026 12:02 PM 193558 USGS-IA_146-GLADBROOK-Vertical_1970.pdf
9/23/2026 12:02 PM 437848 USGS-IA_147-MARSHALLTOWN-Vertical_1981.pdf
9/23/2026 12:02 PM 250658 USGS-IA_148-STATE_CENTER-Vertical_1974.pdf
9/23/2026 12:02 PM 152085 USGS-IA_149-NEVADA-Vertical_1975.pdf
9/23/2026 12:02 PM 288208 USGS-IA_15-MOUNT_AYR-Vertical_1979.pdf
9/23/2026 12:02 PM 297566 USGS-IA_150-AMES-Vertical_1981.pdf
9/23/2026 12:01 PM 705742 USGS-IA_151-BOONE-Vertical_1965.pdf
9/23/2026 12:02 PM 694523 USGS-IA_152-OGDEN-Vertical_1965.pdf
9/23/2026 12:02 PM 480914 USGS-IA_153-JEFFERSON-Vertical_1960.pdf
9/23/2026 12:02 PM 322751 USGS-IA_154-GLIDDEN-Vertical_1976.pdf
9/23/2026 12:01 PM 234994 USGS-IA_155-CARROLL-Vertical_1976.pdf
9/23/2026 12:02 PM 266866 USGS-IA_156-VAIL-Vertical_1976.pdf
9/23/2026 12:02 PM 371849 USGS-IA_157-DENISON-Vertical_1975.pdf
9/23/2026 12:02 PM 353509 USGS-IA_158-CHARTER_OAK-Vertical_1971.pdf
9/23/2026 12:01 PM 150293 USGS-IA_159-MAPLETON-Vertical_1969.pdf
9/23/2026 12:02 PM 244241 USGS-IA_16-BLOCKTON-Vertical_1963_1978.pdf
9/25/2026 7:44 AM 42236 USGS-IA_160-ONAWA-Vertical_19xx-UNKN.pdf
9/23/2026 12:02 PM 87873 USGS-IA_161-WALTHILL-Vertical_1966.pdf
9/23/2026 12:02 PM 643125 USGS-IA_162-GALENA-Vertical_1968.pdf
9/23/2026 12:02 PM 935853 USGS-IA_163-EAST_DUBUQUE-Vertical_1965.pdf
9/23/2026 12:02 PM 848351 USGS-IA_164-PEOSTA_No2-Vertical_1965.pdf
9/23/2026 12:02 PM 706674 USGS-IA_165-FARLEY_No1-Vertical_1965.pdf
9/23/2026 12:02 PM 300900 USGS-IA_166-FARLEY_No2-Vertical_1974.pdf
9/23/2026 12:02 PM 600800 USGS-IA_167-WINTHROP_No1-Vertical_1978.pdf
9/23/2026 12:02 PM 513134 USGS-IA_168-WINTHROP_No2-Vertical_19xx.pdf
9/23/2026 12:02 PM 446655 USGS-IA_169-LA_PORTE-Vertical_1970.pdf
9/23/2026 12:02 PM 96223 USGS-IA_17-BEDFORD-Vertical_1978.pdf
9/23/2026 12:02 PM 516150 USGS-IA_170-WATERLOO-Vertical_1970.pdf
9/23/2026 12:02 PM 408194 USGS-IA_171-REINBECK-Vertical_1970.pdf
9/23/2026 12:02 PM 492347 USGS-IA_172-GRUNDY_CENTER-Vertical_1975.pdf
9/23/2026 12:02 PM 479007 USGS-IA_173-ELDORA-Vertical_1975.pdf
9/23/2026 12:02 PM 448149 USGS-IA_174-RADCLIFFE-Vertical_1975.pdf
9/23/2026 12:02 PM 342976 USGS-IA_175-JEWELL-Vertical_1975.pdf
9/23/2026 12:02 PM 379975 USGS-IA_176-WEBSTER_CITY-Vertical_1975.pdf
9/23/2026 12:02 PM 690346 USGS-IA_177-LEHIGH-Vertical_1965.pdf
9/23/2026 12:02 PM 610238 USGS-IA_178-GOWRIE-Vertical_1965.pdf
9/23/2026 12:02 PM 265815 USGS-IA_179-ROCKWELL_CITY-Vertical_1976.pdf
9/23/2026 12:02 PM 193116 USGS-IA_18-NEW_MARKET-Vertical_1963_1968.pdf
9/23/2026 12:02 PM 286256 USGS-IA_180-SAC_CITY-Vertical_1976.pdf
9/23/2026 12:01 PM 321273 USGS-IA_181-WALL_LAKE-Vertical_1976.pdf
9/23/2026 12:02 PM 442928 USGS-IA_182-IDA_GROVE-Vertical_1966.pdf
9/23/2026 12:02 PM 574268 USGS-IA_183-BATTLE_CREEK-Vertical_1969.pdf
9/23/2026 12:02 PM 155320 USGS-IA_184-CORRECTIONVILLE-Vertical_1969.pdf
9/23/2026 12:02 PM 468606 USGS-IA_185-MOVILLE-Vertical_1962.pdf
9/23/2026 12:02 PM 112620 USGS-IA_186-SIOUX_CITY_SOUTH-Vertical_1966.pdf
9/23/2026 12:02 PM 428594 USGS-IA_187-DICKEYVILLE-Vertical_1966.pdf
9/23/2026 12:02 PM 471373 USGS-IA_188-McCARTNEY-Vertical_1966.pdf
9/23/2026 12:02 PM 371532 USGS-IA_189-TURKEY_RIVER-Vertical_1964.pdf
9/23/2026 12:02 PM 528540 USGS-IA_19-COIN-Vertical_1968_1983.pdf
9/23/2026 12:02 PM 504881 USGS-IA_190-ELKADER_No3-Vertical_1964.pdf
9/23/2026 12:02 PM 501777 USGS-IA_191-OELWEIN_No4-Vertical_1964.pdf
9/23/2026 12:02 PM 490008 USGS-IA_192-OELWEIN_No3-Vertical_1978.pdf
9/23/2026 12:02 PM 345224 USGS-IA_193-DUNKERTON-Vertical_1978.pdf
9/23/2026 12:02 PM 408547 USGS-IA_194-CEDAR_FALLS-Vertical_1987.pdf
9/23/2026 12:02 PM 357866 USGS-IA_195-SHELL_ROCK-Vertical_1970.pdf
9/23/2026 12:02 PM 170012 USGS-IA_196-PARKERSBURG-Vertical_1975.pdf
9/23/2026 12:02 PM 278643 USGS-IA_197-ACKLEY-Vertical_1975.pdf
9/23/2026 12:02 PM 305336 USGS-IA_198-POPEJOY-Vertical_1975.pdf
9/23/2026 12:02 PM 261474 USGS-IA_199-CLARION-Vertical_1974.pdf
9/23/2026 12:02 PM 528496 USGS-IA_2-KAHOKA-Vertical_1968.pdf
9/23/2026 12:02 PM 346016 USGS-IA_20-FARRAGUT-Vertical_1977.pdf
9/23/2026 12:02 PM 289025 USGS-IA_200-EAGLE_GROVE-Vertical_1975.pdf
9/23/2026 12:02 PM 386278 USGS-IA_201-FORT_DODGE-Vertical_1986ed.pdf
9/23/2026 12:02 PM 361724 USGS-IA_202-GILMORE_CITY-Vertical_1975.pdf
9/23/2026 12:02 PM 247870 USGS-IA_203-MANSON-Vertical_1975.pdf
9/23/2026 12:01 PM 383952 USGS-IA_204-PONDA-Vertical_1976.pdf
9/23/2026 12:02 PM 333648 USGS-IA_205-STORM_LAKE-Vertical_1975.pdf
9/23/2026 12:02 PM 371303 USGS-IA_206-AURELIA-Vertical_1975ed.pdf
9/23/2026 12:02 PM 362018 USGS-IA_207-QUIMBY-Vertical_1972ed.pdf
9/23/2026 12:02 PM 463916 USGS-IA_208-KINGSLEY-Vertical_1969.pdf
9/23/2026 12:02 PM 870415 USGS-IA_209-UNION_CENTER-Vertical_1969.pdf
9/23/2026 12:02 PM 94967 USGS-IA_21-HAMBURG-Vertical_1971.pdf
9/23/2026 12:02 PM 539679 USGS-IA_210-SIOUX_CITY_NORTH-Vertical_1962.pdf
9/23/2026 12:02 PM 522114 USGS-IA_212-WYALUSING-Vertical_1970.pdf
9/23/2026 12:02 PM 837589 USGS-IA_213-ELKADER_No2-Vertical_1964.pdf
9/23/2026 12:02 PM 814310 USGS-IA_214-OELWEIN_No1-Vertical_1978.pdf
9/23/2026 12:02 PM 318372 USGS-IA_215-OELWEIN_No2-Vertical_1964.pdf
9/23/2026 12:02 PM 402204 USGS-IA_216-SUMNER-Vertical_1978.pdf
9/23/2026 12:02 PM 277118 USGS-IA_217-TRIPOLI-Vertical_1970.pdf
9/23/2026 12:02 PM 459405 USGS-IA_218-NASHUA-Vertical_1970.pdf
9/23/2026 12:02 PM 212451 USGS-IA_219-MARBLE_ROCK-Vertical_1970.pdf
9/23/2026 12:02 PM 286358 USGS-IA_22-NEBRASKA_CITY-Vertical_1966.pdf
9/23/2026 12:02 PM 403122 USGS-IA_220-ROCKWELL-Vertical_1973.pdf
9/23/2026 12:02 PM 219173 USGS-IA_221-SWALEDALE-Vertical_1973.pdf
9/25/2026 7:44 AM 42504 USGS-IA_222-BELMOND-Vertical_19XX-UNKN.pdf
9/23/2026 12:02 PM 330225 USGS-IA_223-CORWITH-Vertical_1972.pdf
9/23/2026 12:02 PM 318479 USGS-IA_224-LIVERMORE-Vertical_1977.pdf
9/23/2026 12:02 PM 366545 USGS-IA_225-OTTOSEN-Vertical_1977.pdf
9/23/2026 12:01 PM 348504 USGS-IA_226-HAVELOCK-Vertical_1977.pdf
9/23/2026 12:02 PM 336025 USGS-IA_227-LAURENS-Vertical_1972ed.pdf
9/23/2026 12:01 PM 325040 USGS-IA_228-SIOUX_RAPIDS-Vertical_1972ed.pdf
9/23/2026 12:02 PM 295773 USGS-IA_229-PETERSON-Vertical_1972ed.pdf
9/23/2026 12:02 PM 446768 USGS-IA_23-OQUAWKA-Vertical_1974.pdf
9/23/2026 12:02 PM 349107 USGS-IA_230-PAULLINA-Vertical_1972ed.pdf
9/23/2026 12:02 PM 498255 USGS-IA_231-REMSEN-Vertical_1972ed.pdf
9/23/2026 12:02 PM 833663 USGS-IA_232-LE_MARS-Vertical_1967.pdf
9/23/2026 12:02 PM 495596 USGS-IA_233-IRETON-Vertical_1967.pdf
9/23/2026 12:02 PM 467097 USGS-IA_234-AKRON-Vertical_1967.pdf
9/23/2026 12:02 PM 646149 USGS-IA_235-PRAIRIE_DU_CHIEN-Vertical_1974.pdf
9/23/2026 12:02 PM 524940 USGS-IA_236-WAUKON_No3-Vertical_1971.pdf
9/23/2026 12:02 PM 556436 USGS-IA_237-DECORAH_No4-Vertical_1978.pdf
9/23/2026 12:02 PM 405499 USGS-IA_238-DECORAH_No3-Vertical_1978.pdf
9/23/2026 12:02 PM 443412 USGS-IA_239-LAWLER-Vertical_1978.pdf
9/23/2026 12:02 PM 868629 USGS-IA_24-BURLINGTON-Vertical_1979.pdf
9/23/2026 12:02 PM 515431 USGS-IA_240-NEW_HAMPTON-Vertical_1973.pdf
9/23/2026 12:02 PM 509664 USGS-IA_241-CHARLES_CITY-Vertical_1970.pdf
9/23/2026 12:02 PM 669661 USGS-IA_242-RUDD-Vertical_1970.pdf
9/23/2026 12:02 PM 1039562 USGS-IA_243-MASON_CITY-Vertical_1957.pdf
9/23/2026 12:02 PM 476630 USGS-IA_244-CLEAR_LAKE-Vertical_1972.pdf
9/23/2026 12:02 PM 182026 USGS-IA_245-GARNER-Vertical_1972.pdf
9/23/2026 12:02 PM 281330 USGS-IA_246-BRITT-Vertical_1974.pdf
9/23/2026 12:02 PM 216401 USGS-IA_247-ALGONA-Vertical_1977.pdf
9/23/2026 12:02 PM 246420 USGS-IA_248-WHITTEMORE-Vertical_1977.pdf
9/23/2026 12:02 PM 365847 USGS-IA_249-EMMETSBURG-Vertical_1977.pdf
9/23/2026 12:02 PM 521005 USGS-IA_25-NEW_LONDON-Vertical_1977.pdf
9/23/2026 12:01 PM 351155 USGS-IA_250-RUTHVEN-Vertical_1970.pdf
9/23/2026 12:01 PM 432254 USGS-IA_251-SPENCER-Vertical_1970.pdf
9/23/2026 12:02 PM 384639 USGS-IA_252-HARTLEY-Vertical_1968.pdf
9/23/2026 12:01 PM 522102 USGS-IA_253-PRIMGHAR-Vertical_1967.pdf
9/23/2026 12:02 PM 488451 USGS-IA_254-SHELDON-Vertical_1969.pdf
9/23/2026 12:01 PM 539906 USGS-IA_255-SIOUX_CENTER-Vertical_1963.pdf
9/23/2026 12:02 PM 325224 USGS-IA_256-HUDSON-Vertical_1970.pdf
9/23/2026 12:02 PM 841208 USGS-IA_258-FERRYVILLE-Vertical_1968.pdf
9/23/2026 12:02 PM 758490 USGS-IA_259-WAUKON_No2-Vertical_1968.pdf
9/23/2026 12:02 PM 383820 USGS-IA_26-MOUNT_PLEASANT-Vertical_1977.pdf
9/23/2026 12:02 PM 621247 USGS-IA_260-DECORAH_No1-Vertical_1978.pdf
9/23/2026 12:02 PM 740375 USGS-IA_260N-MN_3-SPRING_GROVE-Vertical_1978.pdf
9/23/2026 12:02 PM 205885 USGS-IA_261-DECORAH_No2-Vertical_1978.pdf
9/23/2026 12:02 PM 387779 USGS-IA_262-CRESCO-Vertical_1978.pdf
9/23/2026 12:02 PM 355479 USGS-IA_263-LIME_SPRINGS-Vertical_1973.pdf
9/23/2026 12:02 PM 400621 USGS-IA_264-MCINTIRE-Vertical_1972.pdf
9/23/2026 12:02 PM 428188 USGS-IA_265-OSAGE-Vertical_1972.pdf
9/23/2026 12:02 PM 374051 USGS-IA_266-NORTHWOOD-Vertical_1975.pdf
9/23/2026 12:02 PM 269970 USGS-IA_267-HANLONTOWN-Vertical_1972.pdf
9/23/2026 12:02 PM 317836 USGS-IA_268-LAKE_MILLS-Vertical_1973.pdf
9/23/2026 12:02 PM 335900 USGS-IA_269-BUFFALO_CENTER-Vertical_1972.pdf
9/23/2026 12:02 PM 495183 USGS-IA_27-MOUNT_ZION-Vertical_1977.pdf
9/23/2026 12:01 PM 307908 USGS-IA_270-BANCROFT-Vertical_1972.pdf
9/23/2026 12:02 PM 510029 USGS-IA_271-ARMSTRONG-Vertical_1977.pdf
9/23/2026 12:02 PM 282099 USGS-IA_272-DOLLIVER-Vertical_1977.pdf
9/23/2026 12:02 PM 502773 USGS-IA_273-ESTHERVILLE-Vertical_1970.pdf
9/23/2026 12:02 PM 686298 USGS-IA_274-SPIRIT_LAKE-Vertical_1967.pdf
9/23/2026 12:01 PM 604920 USGS-IA_275-LAKE_PARK-Vertical_1967.pdf
9/23/2026 12:02 PM 384996 USGS-IA_276-SIBLEY-Vertical_1967.pdf
9/23/2026 12:02 PM 199555 USGS-IA_277-GEORGE-Vertical_1969.pdf
9/23/2026 12:02 PM 380737 USGS-IA_278-ROCK_RAPIDS-Vertical_1969.pdf
9/23/2026 12:02 PM 263197 USGS-IA_279-LARCHWOOD-Vertical_1969.pdf
9/23/2026 12:02 PM 864532 USGS-IA_28-ELDON-Vertical_1965.pdf
9/23/2026 12:02 PM 539350 USGS-IA_280-CANTON-Vertical_1967.pdf
9/23/2026 12:02 PM 1020904 USGS-IA_29-OTTUMWA_SOUTH-Vertical_1967.pdf
9/23/2026 12:02 PM 922761 USGS-IA_3-LOMAX-Vertical_1963.pdf
9/23/2026 12:02 PM 808157 USGS-IA_30-BLAKESBURG-Vertical_1983.pdf
9/23/2026 12:02 PM 452254 USGS-IA_31-MYSTIC-Vertical_1980.pdf
9/23/2026 12:02 PM 608981 USGS-IA_32-RUSSELL-Vertical_1980.pdf
9/23/2026 12:02 PM 522119 USGS-IA_33-CORYDON-Vertical_1980.pdf
9/23/2026 12:02 PM 451329 USGS-IA_34-GARDEN_GROVE-Vertical_1964.pdf
9/23/2026 12:02 PM 261575 USGS-IA_35-GRAND_RIVER-Vertical_1979.pdf
9/23/2026 12:02 PM 296265 USGS-IA_36-TINGLEY-Vertical_1979.pdf
9/23/2026 12:02 PM 316813 USGS-IA_37-DIAGONAL-Vertical_1980.pdf
9/23/2026 12:02 PM 253446 USGS-IA_38-LENOX-Vertical_1978.pdf
9/23/2026 12:02 PM 97135 USGS-IA_39-VILLISCA-Vertical_1977.pdf
9/23/2026 12:02 PM 867613 USGS-IA_4-FORT_MADISON-Vertical_1977.pdf
9/23/2026 12:02 PM 238141 USGS-IA_40-STANTON-Vertical_1977.pdf
9/23/2026 12:02 PM 137253 USGS-IA_41-SHENANDOAH-Vertical_1977.pdf
9/23/2026 12:02 PM 213054 USGS-IA_42-TABOR-Vertical_1981.pdf
9/23/2026 12:02 PM 377612 USGS-IA_44-KEITHSBURG-Vertical_1979.pdf
9/23/2026 12:02 PM 620948 USGS-IA_45-WAPELLO-Vertical_1987.pdf
9/23/2026 12:02 PM 362880 USGS-IA_46-WINFIELD-Vertical_1987.pdf
9/23/2026 12:02 PM 235315 USGS-IA_47-OLDS-Vertical_1977.pdf
9/23/2026 12:02 PM 346096 USGS-IA_48-PLEASANT_PLAIN-Vertical_1977.pdf
9/23/2026 12:02 PM 608265 USGS-IA_49-PACKWOOD-Vertical_1955_1969.pdf
9/23/2026 12:02 PM 692040 USGS-IA_5-DONELLSON-Vertical_1977.pdf
9/23/2026 12:02 PM 620676 USGS-IA_50-OTTUMWA_NORTH-Vertical_1967.pdf
9/23/2026 12:02 PM 888119 USGS-IA_51-COAL_FIELD-Vertical_1967.pdf
9/23/2026 12:02 PM 501368 USGS-IA_52-ALBIA-Vertical_1980.pdf
9/23/2026 12:02 PM 358288 USGS-IA_53-MELCHER-Vertical_1980.pdf
9/23/2026 12:02 PM 240398 USGS-IA_54-CHARITON-Vertical_1978.pdf
9/23/2026 12:02 PM 256318 USGS-IA_55-NEW_VIRGINIA-Vertical_1960.pdf
9/23/2026 12:02 PM 228253 USGS-IA_56-OSCEOLA-Vertical_1979.pdf
9/23/2026 12:02 PM 184109 USGS-IA_57-AFTON-Vertical_1979.pdf
9/23/2026 12:02 PM 210506 USGS-IA_58-CRESTON-Vertical_1978.pdf
9/23/2026 12:02 PM 359800 USGS-IA_59-PRESCOTT-Vertical_1978.pdf
9/23/2026 12:02 PM 630709 USGS-IA_6-KEOSAUQUA-Vertical_1971.pdf
9/23/2026 12:02 PM 349740 USGS-IA_60-CARBON-Vertical_1978.pdf
9/23/2026 12:02 PM 264222 USGS-IA_61-GRISWOLD-Vertical_1977.pdf
9/23/2026 12:02 PM 392379 USGS-IA_62-MACEDONIA-Vertical_1955_1977.pdf
9/23/2026 12:02 PM 416945 USGS-IA_63-GLENWOOD-Vertical_1967.pdf
9/23/2026 12:02 PM 317730 USGS-IA_67-MUSCATINE-Vertical_1965.pdf
9/23/2026 12:02 PM 355234 USGS-IA_68-COLUMBUS_JCT-Vertical_1968.pdf
9/23/2026 12:02 PM 455710 USGS-IA_69-WASHINGTON-Vertical_1977.pdf
9/23/2026 12:02 PM 680277 USGS-IA_7-CANTRIL-Vertical_1967.pdf
9/23/2026 12:02 PM 387148 USGS-IA_70-WELLMAN-Vertical_1977.pdf
9/23/2026 12:02 PM 617665 USGS-IA_71-SIGOURNEY-Vertical_1965.pdf
9/23/2026 12:02 PM 690945 USGS-IA_72-WHAT_CHEER-Vertical_1965.pdf
9/23/2026 12:02 PM 571730 USGS-IA_73-OSKALOOSA-Vertical_1976.pdf
9/23/2026 12:02 PM 455632 USGS-IA_74-PELLA-Vertical_1976.pdf
9/23/2026 12:02 PM 561105 USGS-IA_75-KNOXVILLE-Vertical_1965.pdf
9/23/2026 12:02 PM 492817 USGS-IA_76-MILO-Vertical_1965.pdf
9/23/2026 12:02 PM 291199 USGS-IA_77-INDIANOLA-Vertical_1974.pdf
9/23/2026 12:02 PM 323200 USGS-IA_78-SAINT_CHARLES-Vertical_1972.pdf
9/23/2026 12:02 PM 406772 USGS-IA_79-WINTERSET-Vertical_1983.pdf
9/23/2026 12:02 PM 428002 USGS-IA_8-PULASKI-Vertical_1967.pdf
9/23/2026 12:02 PM 372906 USGS-IA_80-GREENFIELD-Vertical_1960.pdf
9/23/2026 12:02 PM 571174 USGS-IA_81-FONTANELLE-Vertical_1969.pdf
9/23/2026 12:02 PM 661372 USGS-IA_82-ANITA-Vertical_1977.pdf
9/23/2026 12:02 PM 447603 USGS-IA_83-MARNE-Vertical_1969.pdf
9/23/2026 12:02 PM 381845 USGS-IA_84-AVOCA-Vertical_1962.pdf
9/23/2026 12:02 PM 537503 USGS-IA_85-NEOLA-Vertical_1966.pdf
9/23/2026 12:02 PM 435575 USGS-IA_86-HONEY_CREEK-Vertical_1966.pdf
9/23/2026 12:02 PM 342266 USGS-IA_87-LeCLAIRE-Vertical_1963.pdf
9/23/2026 12:02 PM 40461 USGS-IA_88-DAVENPORT-Vertical_1963.pdf
9/25/2026 7:44 AM 42337 USGS-IA_89-DURANT-Vertical_19xx-UNKN.pdf
9/23/2026 12:02 PM 731319 USGS-IA_9-MOULTON-Vertical_1976.pdf
9/23/2026 12:02 PM 370521 USGS-IA_90-WILTON_JCT-Vertical_1964.pdf
9/23/2026 12:02 PM 506284 USGS-IA_91-WEST_LIBERTY-Vertical_1963.pdf
9/23/2026 12:02 PM 810934 USGS-IA_92-IOWA_CITY-Vertical_1964.pdf
9/23/2026 12:02 PM 551606 USGS-IA_93-OXFORD-Vertical_1970.pdf
9/23/2026 12:02 PM 482863 USGS-IA_94-NORTH_ENGLISH-Vertical_1966.pdf
9/23/2026 12:02 PM 728713 USGS-IA_95-DEEP_RIVER-Vertical_1966.pdf
9/23/2026 12:02 PM 379486 USGS-IA_96-MONTEZUMA-Vertical_1976.pdf
9/23/2026 12:02 PM 241359 USGS-IA_97-SULLY-Vertical_1976.pdf
9/23/2026 12:02 PM 478198 USGS-IA_98-NEWTON-Vertical_1965.pdf
9/23/2026 12:02 PM 147419 USGS-IA_99-MITCHELLVILLE-Vertical_1972.pdf