| Fire raging on both sides 101, O.H. Bass married Mary Casto Nellist | Humboldt Times | MF 10 | 10/18/1936 | 1,6 | | Fire, Wedding | Abalone Beach Prairie Creek state Park | Prairie Creek State Park, Abalone Beach, Wedding |
| Fire threatened resort and barn was destroyed | Humboldt Times | MF 10 | 10/17/1936 | 1 | | Fire damage | Abalone Beach Clam Beach | Abalone Beach Resort, Clam Beach |
| Firehouse dedicated | Humboldt Times | MF 10 | 6/9/1949 | 3 | 2 & 3 | New Building | Arcata | Arcata Firehouse |
| Fires continue to burn | Humboldt Times | MF 10 | 9/27/1936 | 1 | | Fire damage | Big Lagoon Park Clam Beach | Fires Continue To Burn, Big Lagoon Park, Clam Beach |
| Fires quict down, B.O.S. adopted plans for new bridge | Humboldt Times | MF 10 | 10/21/1936 | 1,3 | | Fires & New Bridge | Prairie Creek Freshwater Slough DeVoy ranch | New Bridge, Freshwater Slough, Fires Quict Down |
| Fires set after trees cut in area | Daily Humboldt Times | MF 10 | 9/21/1878 | 3 | 2 | Fires | | Fires, Fire In Area After Trees Cut |
| Fires sighted by lookout at Mad River | Humboldt Times | MF 10 | 9/22/1936 | 2 | | Fires | Mad River Crannell Ferndale | Ferndale, Mad River Fire Lookout, Rainbow Ridge |
| Firewood contract | Arcata Union | MF 713 | 4/11/1903 | 8 | | Timber | Arcata | Timber, Mr. Poinsett, Charles Campbell |
| First anniversary of 10 hour work day | Humboldt Times | MF 10 | 9/4/1960 | 20 | | Lines of the Times (Sept. 3 , 1860) | | 10 Hour Work Day |
| First annual Lou Brero Memorial Sports car race to occur today | Humboldt Times | MF 10 | 9/1/1957 | 1 & 7 | 6 | Car race | Arcata Airport | First Annual, Car Race, |
| First annual swimming meet | Humboldt Times | MF 10 | 11/1/1929 | 8 | 5 | Swimming Meet | Freshwater Park | Freshwater Park, Annual,Swimming Meet |
| First auto west of Rockies 30 yrs ago was in S.F. | Humboldt Times | MF 10 | 4/8/1926 | 3 | 2 | History | S.F. | Auto, West, S.F , First |
| First brick building in Eureka | Blue Lake Advocate | MF 2191 | 3/10/1917 | | | Building construction | Eureka 2nd and G St. | Elias Miller, Brick Construction, Building |
| First Colony in CA of Cistercians monastery for Belgium | Humboldt Times | MF 10 | 8/11/1963 | 10 | | New colony | Whitethorn | Whitethorn, First Colony Of Cistercians Monastery |
| First Daley store opened | Humboldt Times | MF 10 | 10/13/1923 | 8 | 3 | New store | | Opened, Daley Store |
| First Drive-In Theater | Humboldt Times | MF 10 | 2/28/1950 | 3 | | Theater | Fortuna Rio Dell | First Drive-In Theater, Humboldt County |
| First frame structure in Eureka | Humboldt Times | MF 10 | 9/4/1960 | 20 | | Lines of the Times (Sept. 1 , 1860) | Eureka | Frame Structure, W. R. Duff, County Jail |
| First meeting of Eureka City and County Board of Supervisors | Humboldt Times | MF 10 | 5/14/1950 | 9 | | Meeting | Eureka | Eureka City, County Supervisors |
| First overland car arrived in Eureka | Humboldt Times | MF 10 | 5/11/1909 | 1 | 7 | First Car in Eureka | Eureka | Eureka, Car, Overland Auto Company |
| First part of the Directory | Humboldt Times, Logging Conference Edition | MF 10 | 5/23/1952 | 13-A | | Directory | | Directory |
| First plane of air patrol landing at Orleans | Humboldt Times | MF 10 | 7/10/1921 | 3 | 3 | Air patrol | Orleans | Orleans, Air Patrol |
| First plane to land in Honeydew area made history | Humboldt Times | MF 10 | 6/18/1950 | 9 | | First plane landing | West Roscoe Ranch | First Plane, West Roscoe, Beechcraft Bonanza |
| First professional planner hired by B.O.S. | Humboldt Times | MF 10 | 6/9/1962 | 3 | 7 | New hire | Turlock | Hired, B.O.S. , Professional Planner |
| First Safeway Store in Eureka will open in few days | Humboldt Times | MF 10 | 11/21/1929 | 3 | | New store | Eureka | Eureka, First Safeway |
| First school building built in Eureka to be torn down | Humboldt Times | MF 10 | 10/13/1935 | 1 | 3 | Building torn down | Eureka | School Building, First, Torn Down |
| First time natural gas to go to homes | Humboldt Times | MF 10 | 5/15/1931 | 2 | 5 | Natural gas use | Arcata | Natural Gas, Arcata |
| First trainload of rock to arrived at north jetty yesterday | The Humboldt Standard | MF 9 | 7/22/1924 | 2 | 7 | Jetty work | North Jetty Trinidad | North Jetty, Trainload |
| First TV Station | Humboldt Times | MF 10 | 10/24/1953 | 1 | | TV Stations/Broadcasting | Eureka | Broadcasting, Tv Stations |
| First uint Benbow inn | Humboldt Times | MF 10 | 7/23/1926 | 5 | | New inn | | Benbow Inn |
| First visit by Col. Robert H. Allon of S.F COE | Humboldt Times | MF 10 | 10/1/1963 | 1 | 7 | Visit | | Col. Roberts, Project, Visit |
| Fish preserve qualified for ballot | The Humboldt Standard | MF 9 | 7/31/1924 | 1 | | Initiative Qualifies | Klamath | Klamath, Fish Preserve |
| Fisherman's Wharf | Humboldt Times | MF 10 | 8/10/1947 | 1 | | Infrastructure-wharf | Eureka | Fisherman'S Wharf Constr |
| Fishing | Humboldt Times | MF 10 | 10/18/1952 | 9 | | Fishing | Eel Fernbridge Camp Weott | Fishing |
| Fishing Industry | Humboldt Times | MF 10 | 10/9/1949 | 26-28 | | Text & Photos | | Fishing Industry |
| Fishing Party at Big Lagoon | Arcata Union | MF 713 | 4/28/1900 | 3 | 2 | Local News | Arcata Big lagoon | Fishing, Party, Locals, Town |
| Flash flood broke summer dam at Freshwater county park | Humboldt Times | MF 10 | 10/11/1949 | 1 | | Flood damage | Freshwater county park | Freshwater County Park, Summer Dam, Earl S. Taylor |
| Flood Control Hearing Held at Ferndale | Humboldt Times | MF 10 | 12/17/1937 | 1 | 7 | Hearing | Ferndale | Flood Control, Hearing |
| Flood damage | Humboldt Times | MF 10 | 1/1/1956 | 17 | | Flood | Klamath Klamath Glen Mattole | Flood Damage |
| Flood damage | Humboldt Times | MF 10 | 12/23/1955 | 1 | | Flood | Orick Fernbridge | Flood Damage, Orick |
| Flood damage at Milltown | Humboldt Beacon | MF 2187 | 7/29/1888 | | | Flood | Milltown | Flood, Damage, Houses, Building, Community |
| Flood damage cost by Eel River Delta Flood & Erosion Protection Association | Humboldt Times | MF 10 | 12/16/1937 | 1 | 1 | Flood damage | | Flood Damage, Estimates |
| Flood damage described | Humboldt Times | MF 10 | 12/28/1955 | 5 | | Flood damage | Shively | Shively , Flood Damage |
| Flood damage described, Frank Moranda | Humboldt Times | MF 10 | 12/30/1955 | 12 | | Flood damage | Garberville Mattole Valley | Frank Moranda, Mattole Valley, Flood |
| Flood damage on Mad River | Daily Humboldt Times | MF 10 | 1/30/1878 | 2 | 1 | Flood damage | Mad River | Mad River, House Carried Away |
| Flood damage to houses and libraries in Big Lagoon | Daily Humboldt Times | MF 10 | 4/3/1890 | 3 | | Flood | Big Lagoon | Supt. J. B. Brown, District School Library, Big Lagoon, Flood |
| Flood damage to Mrs. Amanda Feyers ranch | Humboldt Times | MF 10 | 2/23/1927 | 1 | | Flood damage | Orick Eel River Van Duzen River | Mrs. Amanda Feyer, Ranch, Flood Damage |
| Flood damaged description | Daily Humboldt Times | MF 10 | 3/8/1890 | 2 | | Flood-Damage | Eel River | Eel River, Flood Damage |
| Flood in Souther Humboldt | Humboldt Times | MF 10 | 1/8/1956 | 10 | | Flood | Humboldt | Description, Flood |
| Flood-damage to Sandy Prairie Road | Humboldt Standard | MF 9 | 2/13/1958 | | | Flood | Sandy Prairie Road | Sandy Prairie Road, Flood, River, Bank, Levee |
| Flooding on the Eel at Pepperwood, river filled with redwoods, slide at stitz creek | Daily Humboldt Times | MF 10 | 1/15/1909 | 1 | 1 | Weather damage | Eel Pepperwood Stitz creek | Eel, Rose, Flood Water, Slide, Stitz Creek |
