After modern counterparts replaced the original fog bell and Fresnel lens at the Trinidad Head Lighthouse in 1947, the Coast Guard donated the historic artifacts to the Trinidad Civic Club for display in a planned memorial park overlooking Trinidad Bay. Mrs. Earl Hallmark donated land for the park, and in 1949 the club built a concrete Trinidad Memorial Lighthouse, an accurate replica that many visitors believe to be the actual Trinidad Head Lighthouse. The historic Fresnel lens was installed in the lighthouse's lantern room, and the fog bell was suspended from a wooden frame built adjacent to the lighthouse.