Self promotion idea. Really nice way to create interest - put each doc in a separate envelope - you could also put your logo with a rubber stamp or label.decal. Or if you were interested in getting a client (never wait for the phone to ring) send them 4 different samples in four mailings.
Minimal Modern Clean Magazine. Download here: http://graphicriver.net/item/minimal-modern-clean-magazine/11295103?ref=abradesign #design #magazine