The Ballooning manual ,Pilots,Retrieve Crews & Observers,by Bob & Carol Howes, VGC ,176 pages. Really comprehensive manual covering all aspects of the s****t,packed with pics,diagrams etc. http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=220238504888&ssPageName=STRK:MESE:IT