Here is a nice item which is rarely seen. I have often wondered why the second issue of Korea was printed in Washington, DC since the first issue was done in Japan. In any event the stamps were printed by Andrew B Graham Co. a Washington, DC lithographer.
The Andrew B Graham Co. were proud enough to print a ‘die proof’ of the design on the back of their business card. To my knowledge the Graham Co printed no other stamps, except for the US Christmas seal of 1915 which may be stamp related. The Graham Co went out of business in the 1920s and little more appears to be known about it. If anyone finds another copy of this business card please let me know.