Browse Entries - O
- Office of Coast Survey: Historical Coast Pilots
- Office of Coast Survey: Historical Map & Chart Collection
- Office of Coast Survey: NOAA Heritage
- Office of Coast Survey: Notes on the Coast of the United States
- Online resources for the history of physics and allied fields
- Oregon State University
- Organ der Gesellschaft für Wissenschaftsgeschichte
- see Berichte zur Wissenschaftsgeschichte (1978 - ) - Osiris: A Research Journal Devoted to the History of Science and Its Cultural Influences (1936 - )
- Oxford University Press