You are bidding a Vintage 1946 American School of Aircraft Instruments 22 Page Booklet. It is in excellent condition and comes with is original Mailing Envelope, a Letter from C.H. Arbens who was President of the American School of Instruments in 1946, and a Letter of application to the School with Envelope. This 22-page Booklets is full of facts with black and white pictures of the School. Please take a couple of minutes; I was able to get a picture of each page and you can see them in my posted pictures and they are part of my description. I am sure you will be very pleased with this Vintage 1946 American School of Aircraft Instruments 22 Page Booklet and it will make a great addition to any collection and some very interesting reading. All auctions must be paid for at the same time during checkout, and not individually, in order to receive the combine shipping discount. USPS Ground Advantage Mailing in a Bubble Envelope with a heavy backer for protection will be $6.50 and that will include insurance and a Tracking Number within the U.S.A. Thank You for Looking and Good Luck Bidding!