- 1962
- From the Paul T.K. Lin Papers, HKUST Library Special Collections
- Soong Ching-ling letter of appreciation for Paul Lin’s report, 24 December 1962
- Lin, Kuo-tsai (林國材)
- Sun, Tse-ping, 1913-2005 (孫治平)
- Sun, Tse-kiong, 1915-2001 (孫治強)
- Northern Expedition
- Letter of appreciation
- English
- 4 sheets ; 22 x 28 cm. Hand-written, signed.
- 10.14711/spcol/x001213
- https://digitalcollections.hkust.edu.hk/Detail/objects/x001213