| Construction plans set for new plywood plant by Durable Plywood Company | Humboldt Times | MF 10 | 3/1/1951 | 1 | 1 | Construction | | Plywood Plant, Plans |
| Construction work happening at Redwood Acres Fairgrounds | Humboldt Times | MF 10 | 8/6/1937 | 1 | 6 | Fairgrounds facilities | Redwood Acres Fairgrounds | Construction, Fairgrounds, Underway |
| Construction work on new post office to begin soon | Humboldt Times | MF 10 | 8/13/1961 | 3 | | Construction work | | Seymour Rubin, Post Office, Construction, Lease |
| Construction work to start on new federal building within month | Daily Humboldt Times | MF 10 | 6/13/1909 | 4 | 5 | Construction work | Eureka | Federal Building, Eureka |
| Construction worker on the 101 was killed | Humboldt Times | MF 10 | 8/14/1957 | 2 | | Death | Dyerville | Worker, Killed, Work, Bypass, Construction |
| Consultant completed survey of county coastline | Humboldt Times | MF 10 | 9/16/1949 | 1 | 8 | Survey | Humboldt county | Survey, Consultant, County Coastline |
| Consumers Lumber Mill burned | The Humboldt Times | MF 10 | 9/20/1932 | 4 | 6 | Mill burned | Samoa Fairhaven North Peninsula | Consumers Lumber Mill, Burned |
| Cont. column by Susie Baker Fountain on settlement | Blue Lake Advocate | MF 2191 | 4/22/1965 | 3 | 2 | Settlement | Humboldt Bay Eureka | Settlement, Susie Baker Fountain |
| Cont. description of Eureka | Daily Humboldt Times | MF 10 | 6/4/1878 | 1 | 6 | Description | Eureka | Eureka |
| Continued argument for sewers in Eureka | Daily Standard | MF 8 | 1/11/1896 | 2 | 1 | Argument | Eureka | Sewers, Water Supply |
| Continued discussion now giving reasons for sewers | Daily Standard | MF 8 | 1/13/1896 | 2 | 1 | Argument | Eureka | Sewers, Houses Sit Vacant |
| Contract approved for state highway commission to build a road from Loleta to Beatrice | The Humboldt Times | MF 10 | 7/11/1916 | 1 | 5 | Road work | Loleta Beatrice | Contract, State Engineering Advisory Board, 4.3 Mile Road, State Highway Commission |
| Contract award by B.O.S. to Frank Bryant | Humboldt Times | MF 10 | 9/4/1935 | 2 | 1 | Legal Notice | Eel Fort Seward | Contract, Frank Bryant, Bridge, Rebuild |
| Contract awarded | Daily Humboldt Times | MF 10 | 9/14/1910 | 3 | 4 | Legal Notice | Eel Fernbridge | Contract, Pacific Construction Company, |
| Contract awarded | Humboldt Times | MF 10 | 9/8/1926 | 10 | | Road work | | Contract Awarded, Pave, Myrtle Ave |
| Contract awarded by B.O.S. to Peter Kewitt & Sons for new bridge | Humboldt Times | MF 10 | 9/2/1959 | 1 | 2 | Contract | Klamath Martins Ferry | Contract, B.O.S., Awarded, Peter Kewitt & Sons |
| Contract awarded by BOS for new road | Humboldt Times | MF 10 | 6/11/1924 | 2 | | Road work | Ocean House Domingo Hill Petrolia | B.O.S, Contract, Early & Kelly |
| Contract awarded by Eureka City Council | Humboldt Times | MF 10 | 8/26/1939 | 1 | | Contract | Eureka Sweasey Dam | Sweasey Dam, Contract |
| Contract awarded by Ferndale elementary, agreement | Humboldt Times | MF 10 | 6/17/1924 | 3 | 3 | Transcript | Ferndale Big Lagoon Truttmann sink | Contract, Ferndale Elementary School, Agreement |
| Contract awarded by HBMWD for 13 mile pipeline | Humboldt Times | MF 10 | 8/11/1961 | 1 | 1 | Legal Notice | Essex Fairhaven | Hbmwd, Contract, Pipe Line |
| Contract awarded by NWP to George Newell for redwood clearing | Morning Daily Humboldt Times | MF 10 | 6/24/1910 | 1 | 7 | Contract | Dyerville | Contract, Nwp, Awarded, George Newell |
| Contract awarded by State Highway Commission to Rolandi for new bridge | Humboldt Times | MF 10 | 6/20/1924 | 1 | 7 | Contrat | Klamath River | State Highway Commission, Klamath River Memorial Bridge |
| Contract awarded for building of new bridge | The Humboldt Times | MF 10 | 9/2/1911 | 1 | 2 | Legal Notice | Bear RIver | Contract, Steel Bridge, F.L. Smith |
| Contract awarded for construction of concrete grinder bridge | Humboldt Times | MF 10 | 9/1/1925 | | 4 | Contract | Cloney Gulch Wrangletown | Contract, Construction, Fred Mauer & Son |
| Contract awarded for new grammar school in Arcata | Humboldt Times | MF 10 | 2/28/1925 | 9 | 5 | New School | Arcata | Contract, Awarded, Grammar School, Myrl Crane |
| Contract awarded for Parkside reservoir | Humboldt Times | MF 10 | 9/16/1949 | 1 | | Contract | Parkside reservoir | Parkside Reservoir |
| Contract awarded for steel suspension bridge over Klamath | The Humboldt Times | MF 10 | 11/2/1939 | 1 | 3 | Contract awarded | Orleans Klamath | Contract Awarded, Suspension Bridge, C.W. Caletti & Company |
| Contract awarded to build new High School | Humboldt Times | MF 10 | 9/12/1928 | 1 | 4 | Legal Notice | South Fork Union High School | Contract, Awarded, South Fork Union High School |
| Contract awarded to carry out road work | Humboldt Times | MF 10 | 9/2/1925 | 1 | 5 | Contract | | Contract, Mercer Fraser, Grade |
| Contract awarded to Chas. G. Sheeley to build new bridge | Daily Humboldt Standard | MF 9 | 7/7/1908 | 8 | 2 | Contract awarded | Garberville South Fork Eel | Chas. G. Sheeley, Contract Awarded, B.O.S. |
| Contract awarded to construct temporary bridge | Humboldt Times | MF 10 | 4/30/1913 | 3 | 6 | Legal Notice | Trinity River (South Fork) | Contract, Temporary Bridge, Trinity State Highway |
| Contract awarded to Pacific Construction Company for steel bridge | The Daily Humboldt Times | MF 10 | 4/15/1908 | 4 | 3 | Contract | Arlynda Salt River | Arlynda, Contract, Steel Bridge, Pacific Construction Company |
| Contract awarded to pave 19 blocks in Arcata | Humboldt Times | MF 10 | 8/23/1930 | 2 | | Road work | Arcata | Arcata 19 Blocks Pave, Englehart Paving & Construction Company |
| Contract awarded to R.W. Moller for new Junior High School in Eureka | Humboldt Times | MF 10 | 2/4/1925 | 1 | 8 | Contract awarded | Eureka | Constract, Awarded, R.W. Moller, Junior High School |
| Contract awarded to Smith Brothers for bridge work | The Humboldt Times | MF 10 | 10/5/1932 | 3 | 1 | Legal Notice | Mad River | Contract, Awarded, Smith Brothers, Blue Lake Highway |
| Contract by Mercer Fraser as low bidder | Humboldt Times | MF 10 | 5/30/1929 | 1 | | Contract | Arcata Mad River | Contract, Mercer Fraser, Arcata & Mad River Railroad |
| Contract completed for clearing redwood | The Humboldt Times | MF 10 | 9/4/1911 | 1 | 2 | Legal Notice | Dyerville Fruitland Hill | Contract, Nwp Railroad, Holmes - Eureka Lumber Company |
| Contract confirmed by HBMWD for annual payments by G-P & Simpson Paper for $144,000 each | Humboldt Times | MF 10 | 9/24/1959 | 1 | 8 & 9 | Contract | Ruth Reservoir | Ruth Reservoir Project, Contract, Hbmwd, Annual Payments |
| Contract for 4.3 miles of Klamath Highway awarded | Humboldt Times | MF 10 | 10/19/1952 | 19 | | Contract | Weitchpec Adorni | Contract, Klamath Highway, Kenworthy And Patterson |
| Contract for a bridge over the Eel | Humboldt Times | MF 10 | 7/18/1890 | 3 | | Contract | Alderpoint | Bridge, S.F. Bridge Co., Eel River |
| Contract for a new jail awarded | The Humboldt Times | MF 10 | 9/12/1907 | 4 | 2 or 3 | Legal Notice | Eureka | Contract, Jail, Pacific Construction Company, James Willison, Reinforced Concrete |
| Contract for aerial survey work of northern Humboldt County | Humboldt Times | MF 10 | 9/28/1958 | 15 | 1 & 2 | Article | Northern Humboldt County | Contract, Aerial Survey, Northern Humboldt County, Delano Aerial Survey |
| Contract for constructing road between Willow Creek & Hoopa with A.J. Fairbanks Construction Company app by BOS | The Humboldt Standard | MF 9 | 7/1/1924 | 3 | 3 | Road work | Willow Creek Hoopa | Contract, Road Between Willow Creek & Hoopa, A.J. Fairbanks Construction Company |
| Contract for construction of a bridge at Bear Canyon | Daily Humboldt Times | MF 10 | 5/17/1890 | 2 | | Contract | Bear Canyon | Bear Canyon, Bridge |
| Contract for construction of overpass | Humboldt Times | MF 10 | 8/14/1930 | 1 | | Contract | Eureka | Contract, Overpass Over Nwp Tracks, J.F. Maurer & Son |
| Contract for construction of Redwood Highway | Humboldt Times | MF 10 | 10/28/1913 | 1 | 7 | Road work | Garberville Fairbanks Baechtel | Redwood Highway, Garberville, Construction |
| Contract for extensive dredging of channel | Humboldt Times | MF 10 | 8/8/1909 | 1 | 3 | Contract | Fields landing | Contract For Dredging, Fields Landing, New Dock |
| Contract for grading 101 was awarded | Humboldt Times | MF 10 | 7/4/1922 | 3 | 3 | Road work | Trinidad Freshwater Lagoon | Contract, 101, Pacific Construction Company |
| Contract for grading lst section | Daily Times | MF 10 | 2/1/1883 | 3 | 1 | Contract | Fields landing Salmon Creek | Fields Landing, Salmon Creek, Grading 1St Section |
| Contract for new sewage plant | Humboldt Times | MF 10 | 2/7/1950 | | | Contract | Arcata | Arcata, Sewage Plant, Mercer Fraser |
