This has been posted on a Facebook group page and they are looking to reach as many people as possible Can any mumsnetters help? 
It was posted 21/4/15
Mary-Anne Ross
P4-7 at Helmsdale Primary School are looking at the continents of the world this term. We would like to ask as many people as possible to send us a postcard from anywhere around the world, so we can display them with our work. We can't wait to see how far and wide we cover smile emoticon
Our address is Helmsdale Primary School, Old Caithness Road, Helmsdale, Sutherland, KW86JW
Thank you, please copy / share