Hancock County
- Carthage vicinity, La Moine (Kelly) Bridge (HIER HA-1996-1)
- La Harpe, La Harpe Creek Bridge (HIER HA-2011-1)
- La Harpe, Township Road 1/Farder Bridge (HIER HA-2016-1)
- Nauvoo, Adam Kaufman House, Corlis & Sidney Streets (HABS IL-257)
- Nauvoo, Almon W. Babbitt House, Main & Kimball Streets (HABS IL-26-25)
- Nauvoo, Bangham House, Mulhollen & Seventeenth Streets (HABS IL-255)
- Nauvoo, Baumert House, Mulhollen & Fifteenth Streets (HABS IL-26-27)
- Nauvoo, Blacksmith Shop (HABS IL-1141)
- Nauvoo, Brick House (HABS IL-1143)
- Nauvoo, Brick House (HABS IL-1146)
- Nauvoo, Brigham Young House, Granger & Kimball Streets (HABS IL-250)
- Nauvoo, Cooper Gross House, Knight & Sixteenth Streets (HABS IL-254)
- Nauvoo, Heber C. Kimball House, Ninth & Munson Streets (HABS IL-244)
- Nauvoo, Jonathan Browning House, Main Street (HABS IL-245)
- Nauvoo, Joseph Smith House (HABS IL-253)
- Nauvoo, Lucy Mack Smith & Joseph Bates Noble House (HABS IL-1139)
- Nauvoo, Mansion House, Main & Water Streets (HABS IL-26-24)
- Nauvoo, Mormon Tabernacle (HABS IL-1138)
- Nauvoo, Newspaper Office & Print Shop (HABS IL-1142)
- Nauvoo, P. Mix House, Kimball & Twenty-First Streets (HABS IL-256)
- Nauvoo, Scovill Bakery (HABS IL-1137)
- Nauvoo, Seventies Hall (HABS IL-1140)
- Nauvoo, Snow Ashby House (HABS IL-1145)
- Nauvoo, Stone Building (HABS IL-1144)
- Nauvoo, Weld Greek Revival House, 1380 Mulholland (covenant, EXPIRED)
- Nauvoo, Wilford Woodruff House, Tenth & Hotchkiss Streets (HABS IL-26-26)
- Nauvoo, Winery (HABS IL-1136)
- Warsaw, 202 Main Street (HABS IL-249-B)
- Warsaw, 202-230 Main Street (HABS IL-249-C)
- Warsaw, 222 Main Street (HABS IL-249-D)
- Warsaw, 407-413, 421-429 Main Street (HABS IL-249-E)
- Warsaw, 421 Main Street (HABS IL-249-F)
- Warsaw, Main Street (historic view) (HABS IL-249)
- Warsaw, Main Street (historic view), Adams House & adjoining Building (HABS IL-249-A)
- Warsaw, Mussetter House, 950 Webster Street (HABS IL-251)
- Warsaw, Warsaw Museum Building, 401 Main Street (covenant, EXPIRED)