This manual is a comprehensive guide for the maintenance of the Cal. 30 Machine Gun, M37 (Tank) used in the United States. It includes instructions on operation, disassembly, assembly, and parts identification, among other things. The document has been scanned and converted to a PDF format for easy access. It is a great addition to any militaria collection and is an excellent resource for anyone interested in the history of military weaponry. This is a U.S. Government document in PDF format. You will receive your order via First Class mail in a data disc CD. If you'd prefer to receive a downloadable link to your PDF instead, feel free to make an offer for $9.99 to offset the physical delivery. If you've already paid, click on the 'Contact Seller' link to request it, and the difference will be refunded to you. Combined orders will be discounted and added to the same disc. Simply browse my other listings to find additional documents of interest, add them to your shopping cart individually, and your discount will automatically be applied at checkout. A portion of the proceeds will go to Aid Our Veterans to Provide Homes and Shelters for Homeless Veterans, to get Homeless Vets off the streets and into treatment programs provided by the VA Administration, to provide aid and comfort with food, clothing, and furnishings as needed, help with emergency assistance for critical items such as utilities, medication, etc. Thank you for your support.