HONGKONG

http://www.rodsell.com/hksmsic/hksmsic.html Philatelic Study Group

http://rodsell.com/hkperfins/hkperfin.html Hong Kong Perfins

http://www.philatel2.com/jubilee/id245.htm King George V Silver Jubilee - Hong Kong Perfins

BUCH :
Tilles, Harvey G. [?Year.] The Perfins of Hong Kong. [High Point, NC]: Priv. Publ. 6 p.

BUCH :
Sell, Rod. 2002. Hong Kong Perfins http://rodsell.com/hkperfins/hkperfin.html. 61 p. [Pagination dependant on print scale.]