- Bureau of Reclamation (Washington, D.C)2
- Bureau of Soils (Washington)2
- Bureau of the American Republics (Washington, D.C)2
- Burland Lithographic Co (Montreal)2
- Burlington Route, 19102
- By authority of Wilfred Laurier, President of the Privy Council (Ottawa, Ont)2
- C.R. Allen & Co.2
- C.S. Hammond & Co (New York)2
- Cadell & Davies (London)2
- Canada Dept. of Mines, Geological Survey (Ottawä)2
- Carey & Hart2
- Carl Flemming AG (Berlin)2
- Carlos Sanz2
- Carte Taride (Paris)2
- Central Map, Survey and Publishing Co.2
- Chez Delamarche (Paris)2
- Chez l'auteur (Paris)2
- City Engineer's Office (Saint Paul, Minnesota), 18852
- City Hall (Central Falls, RI)2
- City of Bloomington2