Looking at the links in the Wikipedia article I discovered this wonderfully “old web”-style page with various envelope folding guides[1]. I found it so endearin

Looking at the links in the Wikipedia article I discovered this wonderfully “old web”-style page with various envelope folding guides[1]. I found it so endearing that I sat down and tried a few of them out, which was great fun. [1] http://www.orihouse.com/elfa.html http://www.orihouse.com/elfa.html