Operating Manual

http://books.google.com/books?id=nv89Ks5irIcC&pg=PA60&lpg=PA60&dq=a26+bomber&source=bl&ots=IhO0nasmIk&sig=rI1sNFabOimY9lRLQCeCB3S6kq0&hl=en&sa=X&ei=fZg-UZCqIqSi2gXOq4CoDA&ved=0CG4Q6AEwCTgU#v=onepage&q=a26%20bomber&f=false