The Open When letters work as a variation of the Letters to the Future (=letters to be opened on an specific day in the future). There are letters written and given with instructions for opening at a later date or time.
There are many different types of Open When letter topics. They can be general ("when you miss me") or specific ("for your birthday"). On this post of Sharis' Berries blog you will find not less than... 280 topics! Plus some fun ideas and printable templates (like those on the picture, taken from the same post).
Linocut sent by Alan (the UK), showing an old pub in Wivenhoe.
Postcard sent by Laura (the UK). Watercolour of Conquest House in Canterbury. It is one of the oldest buildings in Canterbury. Famous for its 1066 undercroft and its historical association with St Thomas Beckett and the four knights, it also features a 17th century royal mural and carvings. Now it is an art gallery.
There is an officialSurvivor badge for people who complete the #AtoZ April Challenge. But the unofficial congratulations, like this alphabet-themed envelope and postcard, sent by Heleen (the Netherlands)... is much more interesting. And it gives ideas for future challenges...
And more ideas arrived on this envelope from Phillip (the USA), made of a cover of a magazine that seems just perfect for mail art, even the colours they used. The stamp is almost hidden... At first sight I didn't spot it!
Last week, I received this completely unexpected postcard from the Postcrossing Tampere International Meeting, thanks to Laura (Finland). I love the illustration by Stephanie Titta Lindström. Especially the seagull stealing food. It is very Finnish!
According to the Wikipedia: "Lancelot Brown (1716 -1783), was an English landscape architect. He designed over 170 parks, many of which still endure. He was nicknamed Capability because he would tell his clients that their property had "capability" for improvement."
Royal Mail issued a set of 8 stamps to celebrate the 300th anniversary of his birthday. I have received almost all of them. With a great variety of postmarks!
Stamps celebrating the more than 400 national parks in the United States, issued in 2016 to coincide with the centennial of the National Park Service. The set includes 16 different stamps, all of them showing views of national parks or plants, animals, artwork, objects, and structures found in or associated with a national park.