United States stamps perfins

No.	Town	Firms	Initials	Years
01.	Lethbridge, AB	Alberta Railway & Irrigation Co.	ARI	1903 - 1911	Pic
02.	Montreal, P.Q.	Canadian National Railways	CNR	1911 - 1972	Pic
03.	Winnipeg, MB	Canadian National Railways	CNR	1923 - 1983	Pic
04.	Montreal, P.Q.	Canadian Pacific Railway Co.	CPR	1932 - 1970	Pic
05.	Montreal, P.Q.	Dennison Manufacturing Co.	DM/Co	1911 - 1964	Pic
06.	Toronto, ON	J. Eby Blain Co. Ltd.	E-B	1898 - 1922	Pic
07.	Montreal, P.Q.	Goodwin's Ltd.	G	1911 - 1928	Pic
08.	Toronto, ON	Gordon Mackay & Co. Ltd.	GM/Co	1903 - 1951	Pic
09.	Sault Ste Marie, ON	Lake Superior Corporation	LSC	1903 - 1955	Pic
10.	Bridgeburg, ON	Pratt & Lambert	P&L	1903 - 1956	Pic
11.	Walkerville, ON	Parke, Davis & Co.	PD/Co	1903 - 1949	Pic
12.	Montreal, P.Q.	Royal Insurance Co. Ltd.	RICo/LD	1903 - 1949	Pic
13.	Montreal, P.Q.	Shawinigan Water & Power Co.	S (in circle)	1911 - 1928	Pic
14.	Montreal, P.Q.	Sun Life Assurance Company of Canada	SUN/LIFE	1911 - 1950	Pic
15.	Whitehose, Y.T.	White Pass & Yukon Route Railway	WP/&/YR	1903 - 1922	Pic
16.	Toronto, ON	William Wrigley Jr. Co.	WW/JR	1911 - 1977	Pic