Spotter's Guide to Flags of the WorldWilliam G. Crampton · First published 2003 · Latest edition 2006Open the Tome
Complete Flags of the World (Complete Guide)DK Publishing, William G. Crampton, Flag Institute · First published 1997Open the Tome
The Observer's Book of Flags (Warne Observers)William G. Crampton · First published 1991Open the Tome
Webster's Concise Encyclopedia Of Flags & Coats of ArmsWilliam G. Crampton · First published 1985Open the Tome
The New Observer's Book of Flags (New Observer's Pocket)William G. Crampton · First published 1984Open the Tome
