Origami 2024: Week 18
Week 18 (4/28/24)
Square Letter Fold.
1 8.5×11 inch printing paper.
Source: http://m.origami-instructions.com/site/origami-instructions_1/default?url=http%3A%2F%2Fwww.origami-instructions.com%2Forigami-square-letter-fold.html#2900