Letter from Patrick Koh Kok Hua to Chung & Co., Advocates & Solicitors concerning the late Koh Kim Yam's income tax, pension and shares of Day Dawn Minerals.

Letter from Patrick Koh Kok Hua to Comptroller of Inland Revenue [Attn: Miss Teo] enclosing the Dividend Vouchers and Interest Payment slip in respect of Koh Kim Yam's tax assessment (Assessment No. GS/22006/76)

Letter from Patrick Koh Kok Hua to his uncle Koh Chew Yam requesting for a fresh valuation of Koh Peng Chiang's estate for purpose of computing his late father's share of the Estate in preparing the list of his assets

Letter from Patrick Koh Kok Hua to Koh Chew Yam concerning cheque to Choo Ngai Mun

Letter from Patrick Koh Kok Hua to the Chartered Bank concerning crediting of S$120.18 into Koh Kim Yam's account.

Letter from Patrick Koh Kok Hua to the Hon. Treasurer, Alumni Association informing them of the passing away of Dr Koh Kim Yam

Letter from Patrick Koh Kok Hua to the Manager, Singapore Island Country Club concerning the late Dr Koh Kim Yam's Membership No. K-187

Letter from Patrick Koh to Chung & Co. Advocates and Solicitors concerning Koh Kim Yam's Income Tax Return for 1977, letter from hospital concerning sum of undrawn salary. Patrick Koh also requested a letter in respect of Koh Kim Yam's car. He also highlighted the change of phone number

Letter from Patrick Koh to Chung & Co. Advocates and Solicitors concerning the unused cheques of the Chartered Bank to be returned to the bank and how he would like to finalise the preparation of the Affidavit by 1977/06/05 when he would be leaving for UK

Letter from Patrick Koh to Registry of Vehicles conerning renewal of driving licence of Koh Kim Yam