Links:
[1] https://archaeology.uiowa.edu/county-maps-iowa-geologic-sources
[2] https://archaeology.uiowa.edu/digitized-lithic-source-locations
[3] https://archaeology.uiowa.edu/adair-county-maps
[4] https://archaeology.uiowa.edu/fayette-county-maps
[5] https://archaeology.uiowa.edu/madison-county-maps
[6] https://archaeology.uiowa.edu/allamakee-county-maps
[7] https://archaeology.uiowa.edu/franklin-county-maps
[8] https://archaeology.uiowa.edu/mahaska-county-maps
[9] https://archaeology.uiowa.edu/benton-county-maps
[10] https://archaeology.uiowa.edu/fremont-county-maps
[11] https://archaeology.uiowa.edu/marion-county-maps
[12] https://archaeology.uiowa.edu/buchanan-county-maps
[13] https://archaeology.uiowa.edu/grundy-county-maps
[14] https://archaeology.uiowa.edu/marshall-county-maps
[15] https://archaeology.uiowa.edu/buena-vista-county-maps
[16] https://archaeology.uiowa.edu/hardin-county-maps
[17] https://archaeology.uiowa.edu/mills-county-maps
[18] https://archaeology.uiowa.edu/butler-county-maps
[19] https://archaeology.uiowa.edu/harrison-county-maps
[20] https://archaeology.uiowa.edu/montgomery-county-maps
[21] https://archaeology.uiowa.edu/cass-county-maps
[22] https://archaeology.uiowa.edu/henry-county-maps
[23] https://archaeology.uiowa.edu/pottawattamie-county-maps
[24] https://archaeology.uiowa.edu/cedar-county-maps
[25] https://archaeology.uiowa.edu/howard-county-maps
[26] https://archaeology.uiowa.edu/ringgold-county-maps
[27] https://archaeology.uiowa.edu/cerro-gordo-county-maps
[28] https://archaeology.uiowa.edu/jackson-county-maps
[29] https://archaeology.uiowa.edu/story-county-maps
[30] https://archaeology.uiowa.edu/cherokee-county-maps
[31] https://archaeology.uiowa.edu/jefferson-county-maps
[32] https://archaeology.uiowa.edu/tama-county-maps
[33] https://archaeology.uiowa.edu/clayton-county-maps
[34] https://archaeology.uiowa.edu/johnson-county-maps
[35] https://archaeology.uiowa.edu/union-county-maps
[36] https://archaeology.uiowa.edu/crawford-county-maps
[37] https://archaeology.uiowa.edu/jones-county-maps
[38] https://archaeology.uiowa.edu/van-buren-county-maps
[39] https://archaeology.uiowa.edu/decatur-county-maps
[40] https://archaeology.uiowa.edu/kossuth-county-maps
[41] https://archaeology.uiowa.edu/washington-county-maps
[42] https://archaeology.uiowa.edu/delaware-county-maps
[43] https://archaeology.uiowa.edu/lee-county-maps
[44] https://archaeology.uiowa.edu/webster-county-maps
[45] https://archaeology.uiowa.edu/des-moines-county-maps
[46] https://archaeology.uiowa.edu/linn-county-maps
[47] https://archaeology.uiowa.edu/winneshiek-county-maps
[48] https://archaeology.uiowa.edu/dubuque-county-maps
[49] https://archaeology.uiowa.edu/louisa-county-maps
[50] https://archaeology.uiowa.edu/woodbury-county-maps