History Abbreviations and Acronyms

1. OHS
   Oregon Historical Society
2. OHT
   Organization of History Teachers
3. OIA
   Old Ikdo-Aryan
4. OIB
   Orient Institute Beirut
5. OIC
   Organization of The Islamic Conference
6. OIOC
   Oriental and India Office Collection
7. OJA
   Oxford Journal of Archaeology
8. OJC
   Oxford Jewish Congregation
9. OJOA
   Oxford Journal of Archaeology
10. OK
    Ober-Kommando
11. OKKT
    Union Pacific Railroad
12. OLP
    Ordinary Lanluage Philosophy
13. OMFRC
    Ontario Metis Family Records Center
14. OMNH
    Oklahoma Museum of Natural History
15. OMRS
    Orders & Medals Research Society
16. ONHGS
    Old New Hanovermgenealogical Society
17. ONS
    Oriental Numismatic Society
18. ONT
    Order of The New Templars
19. ONT
    Ordo Novi Templi
20. OO
    Official Organ

Last updated: May 24, 2020 — Total entries: 3,857