10 Pack Sales Book Order Receipt Invoice Carbonless Copy 50 Sets 3.5" X 5.5" Sales Book Order Receipt Invoice ~ Carbonless Duplicate ~ 2 Parts paper white & yellow ~ 50 Sets in each book ~ Size: 3.5" X 5.5" Sales Book Order Receipt Invoice Carbonless Duplicate 2 Parts paper white & yellow 50 Sets in each book Size: 3.5" X 5.5"