Why the extra inner envelope in wedding invitations and other formal correspondence? It actually had a practical purpose, according to Crane’s. Invitations used to be hand delivered by footmen and needed protection from muddy streets and bad weather. The outer envelope would often be soiled upon arrival. So the inner envelope made for a clean presentation. Now it could be considered extraneous, I suppose. But it adds a level of importance to the contents. Crane’s makes its papers from cotton and other more renewable resources than trees. They import hemp from Europe and seem active in pushing for its return as a U.S. crop. They also use clothing remnants to make papers. Denim scraps go into U.S. currency and the worn out currency is itself recycled into more paper. They have the right philosophy.