帮我找到下列英文内容的出处。中文来源或者英文来源都可以。
  
Postmarks were found on some postcards, suggesting the places where they were issued, such as ‘Chaoshan’, ‘Guangdong’. There were also printed characters showing companies that produced them such as ‘Issued by Hong Kong Shantou Artex Company". These postmarks and printed characters suggested that those postcards were probably the works of old Chaoshan (in Guangdong province, near Hong Kong) artists, and then were distributed overseas through institutions such as Hong Kong Shantou Artex Company.
  
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