- The Fremont Bridge, the first double-leaf bascule drawbridge spanning the Lake Washington Ship Canal, opened June 15, 1917, 19 days before the Government Locks at Ballard were officially dedicated. The bridge links the neighborhoods of Fremont and north Queen Anne, previously connected by a streetcar-carrying wooden trestle.
- Cyclosporiasis (Wikipedia)
Cyclosporiasis is a disease caused by infection by oocytes of Cyclospora cayetanensis, a pathogenic apicomplexan protozoan transmitted by feces-contaminated food and water. It is a cause of food poisoning. Because the oocysts of Cyclospora must sporulate in the environment for 1–2 weeks before they become infectious, direct person-to-person transmission is unlikely.