43 - 山东省 -- PB&C-A : Regional Collection No. 1 — Shantung Province
44 - 东三省 -- PB&C-B: Regional Collection No. 2 — The Northeast Provinces
45 - 新疆/福建 -- PB&C-C : Regional Collection No. 3 & 4 — Sinkiang & Fukien Provinces
46 - 直隶北京 -- PB&C-D : Regional Collection No.5 — Peking of Chihli Province
48 - 百年淸华 -- PB&C-f : Centenary Memory of Tsing Hwa University And Its Post Office
49 - 欧亚旅程 1 — PB&C-G : Siberian Railway Series 1–Paris To Shanghai 1903 (Chinese language edition)
50 - 欧亚旅程 2 -- PB&C-H : Siberian Railway Series 2–Paris To Shanghai 1903 (English language edition)
51 - 欧亚旅程 3 -- PB&C-I : Siberian Railway Series 3– A Winter Journey Through Siberia, 1910
52-- 邮戳演革 -- PB&C-J : Evolution of Cancellations From Northeast Provinces, 1875--1932
YEN'S PHILATELIC CORNER
