
The Tin 'Hat' and Animal Money, a book by Shaw and Kassim published in 1970 by Muzium Negara, Kuala Lumpur, Malaysia is a useful reference for the subject. This 17-page book, excluding nine exhibition plates, focuses more on Tin 'Hat" Money (Pagodas and Pyramids) but provides brief and good background information on the development of Animal Money (Animal Currency).