Hi Nick:
Not sure what you mean by Dogfight maps. I would recommend establishing a reading list, and using the references in the book, get the maps of the area referenced. The towns near the airfields, the towns over which the dogfights took place. Use your web browser, go to Amazon and then type in WWI and browse the book list. You can pick up an Osprey book for about half of what you would pay from a retailer. Part and parcel of this hobby is establishing and building a reference library, and just reading for the sheer enjoyment. Udet, Rickenbacker, Von Richtoffen, type those names and you will be surprised at the books that turn up. Wikipedia also has some good info on this as well.
Good luck.
Mark