| Humboldt | Assessor | Persons Subject to Military Duty | 1875-1897 |
| Humboldt | Clerk | Naturalizations-Declaration of Intent | 1906-1929 |
| Humboldt | Clerk | Naturalizations-First Papers | 1870-1903 |
| Humboldt | Clerk | Naturalizations-Index | 1870-1906 |
| Humboldt | Clerk | Naturalizations-Minors | 1903-1906 |
| Humboldt | Clerk | Naturalizations-Petition & Record | 1906-1937 |
| Humboldt | Clerk | Naturalizations-Record | 1870-1903 |
| Humboldt | Clerk | Naturalizations-Second Papers | 1870-1906 |
| Humboldt | Clerk | Probate-Combined Probate Docket | 1891-1928 |
| Humboldt | Clerk | Probate-General Index | 1857-1950 |
| Humboldt | Clerk | Probate-Letters-Adm | 1921-1944 |
| Humboldt | Clerk | Probate-Letters-Adm, Gdn | 1911-1921 |
| Humboldt | Clerk | Probate-Letters-Gdn | 1921-1963 |
| Humboldt | Clerk | Probate-Record | 1857-1927 |
| Humboldt | Clerk | Probate-Reports-Adm, Gdn | 1893-1900 |
| Humboldt | Clerk | Probate-Wills | 1874-1940 |
| Humboldt | Private | Church & Cemetery Records | 1800s-1900s |
| Humboldt | Recorder | Deeds-Lands-Index & Record | 1855-1901 |
| Humboldt | Recorder | Deeds-Town Lots-Index & Record | 1855-1901 |
| Humboldt | Recorder | Homestead Record | 1885-1934 |
| Humboldt | Recorder | Original Entries, abstract | 1858-1863 |
| Humboldt | Recorder | Vital Stats-Births-Record | 1880-1904; 1906-1935 |
| Humboldt | Recorder | Vital Stats-Deaths-Record | 1897-1904; 1906-1921 |
| Humboldt | Recorder | Vital Stats-Delayed Birth Record | 1880-1930 |
| Humboldt | Recorder | Vital Stats-Marriages-Record | 1858-1927 |
| Humboldt | Treasurer | Old Age Assistance Pension Tax List | 1934-1935 |
