Each of the services has a visual aid showing the medals past and present. Contact you local recruiter. He can probably help you get a copy of the visual aid for the Army.
Go to:
http://www.tioh.hqda.pentagon.mil/
Read their conditions of image use.
Nice tribute, we are all grateful for his service.
If I may suggest?
http://www.ultrathin.com/products.htm
http://www.usamilitarymedals.com/rackbuilder.html
or any of the other (many) so-called rack builders. They provide a professional product, can be made as a one piece rack and provide the full color visual - something important to determine the actuall award.
Be proud of your Father - a CIB and DFC - musta been one heck of a tour.