In 1964 KLM (Royal Dutch Airlines) published a world atlas for their passengers. Possibly, a passenger could find a copy of the atlas on the backside of the seat in front of him/her, or could buy a tax free copy at the airport. Apart from the cover, this atlas is not a Dutch product, but a license edition of Hammond’s World atlas and gazetteer. C.S. Hammond & Co, today known as Hammond Map, is an American map publisher. Caleb Stilton Hammond founded the map company in 1900 in New York, but moved soon to Maplewood, New Jersey. In the 1950s and 1960s it was the second largest map company in the United States. All the maps in the KLM atlas are in English. Vietnam is coloured purple on the map of Southeast-Asia, only a dotted line separates North-Vietnam from South-Vietnam.
Wereldatlas KLM / World atlas and gazetteer. Maplewood, N.J.: C.S. Hammond & Co. ; [Amsterdam]: KLM, 1964 (COLLBN Atlas 1165)