| Abbreviation | Definition |
|---|---|
| CAHC | Center for Arkansas History and Culture |
| CAHJP | the Central Archives for the History of the Jewish People |
| CAHO | Columbia American History Online |
| CASH | Comprehensive Assessment of Symptoms and History |
| CATH | Cinema and Television History |
| CBAH | Celebration of Black American History |
| CBHF | Chesapeake Bay Our History and Our Future |
| CCHN | Child Care History Network |
| CCHS | Carleton County Historical Society |
| CCHS | Columbia County Historical Society |
| CCLH | Canadian Committee on Labour History |
| CELH | Centre for English Legal History |
| CFH | Conference on Faith and History |
| CFHS | Cornwall Family History Society |
| CGHL | Canadian Genealogy and History Links |
| CHARM | Centre for the History and Analysis of Recorded Music |
| CHB | Centre for the History of the Book |
| CHB | Centre for the History of the Book's |
| CHDR | Center for History Democracy and Reconciliation |
| CHE | Culture History and Environment |