Houwink

Title Volume (Number) Page
The Postmarks of Portuguese Timor1 (4):4
"Stamp Day" Cancellations of Dili, Timor2 (2):23
Timor Postmark Update2 (4):63
Post Offices of Portuguese Timor (1961)3 (3):49
Post Offices and Modern Postmarks of Port. Guinea4 (1):10
Timor: First Overprint Issue on Macau Crown Type6 (3):37
Postal History of Timor—Notes7 (2):21
Temporary Cancellations of Portuguese Guinea10 (2):22