Advertising Poster UNICEF Let Your Greeting Help A Child. Original vintage charity poster for UNICEF greeting card fund - Let your greeting help a child - Artwork features a small boy wrapped up warm inside a greetings card. UNICEF / United Nations International Children's Emergency Fund is an agency of the United Nations responsible for providing humanitarian aid to children worldwide. Printed by McCorquodale and Co Ltd, London. Good condition, fold, tears on edges, pinholes, paper loss on bottom right corner. Country of issue: UK, designer: Unger, size (cm): 36x23, year of printing: 1950s.