@Medievalist Thanks Lisa for the reminder about Levenger. Perhaps it'll help someone, but sadly I'm looking for things in the slightly larger 4x6" range. Despite that Levenger will do custom orders for 4x6 cards, they don't seem to have pocket briefcases for them. Given the support, I suppose I'm glad I didn't opt for even larger cards, though I suppose there is a fair amount of material for larger notebooks in that range.