Philip Cockrill

• K.N.S.M.
• K.N.S.M., the Royal Netherlands Steamship Company, 1856-1981
• K.P.M.
• Liberia
• Mesopotamia
• Ocean Mails Being an Account of Sea and Ship Cancellations of the 20th Century
• The history, ships and postal cancellations of the Woermann Line
• United Fruit Company