Free pop-up staircase pattern from the new book The Packaging and Design Templates Sourcebook 2 by Luke Herriott | Pop up book, Paper pop, Card making templates
Beccy's Place: Tutorial: Stair Step Fold
How to Make pop-up paper stairs « Papercraft :: WonderHowTo
Craftside: Free pop-up staircase pattern from the new book The Packaging and Design Templates Sourcebook 2 by Luke Herriott