Source Acronyms
- A&DHS
- Aurora and District Historical Society
- APMA
- Algonquin Park Museum Archives
- BHS
- Burlington Historical Society
- CIHB
- Canadian Inventory of Historic Buildings
- CIN
- Canadian Illustrated News
- COGM
- County of Grey Museum
- COTA
- City of Toronto Archives
- CPCC
- Canadian Post Card Collection
- CSTM
- Canadian Science and Technology Museum
- CTA
- Canadian Transportation Agency
- CTC
- Canadian Transport Commission
- GBIA
- Grey/Bruce Image Archives
- HHPC
- Halton Hills Photo Collection
- HSMBC
- Historic Sites and Monuments Board of Canada
- IHS
- Innisfil Historical Society
- KPC
- Kingston Photo Collection
- N&DA
- Norwich and District Archives
- NAC
- National Archives of Canada
- NLC
- National Library of Canada
- NMC
- National Map Collection
- OPL
- Orillia Public Library
- QUA
- Queen's University Archives
- ROPA
- Region of Peel Archives
- SCA
- Simcoe County Archives
- SCM
- Simcoe County Museum
- TRL
- Toronto Reference Library