U.S. Flags have been erased. Click twice for high resolution image. We use variations of this picture on CSRAB documents and in our logo. It was published in 1873 and is in the public domain. The source book is: J. H. Studer, Columbus, Ohio; its History and Resources (Columbus, 1873). I have been told to erase the flags in some cases, due to rules about the U.S. flag. http://www.usflag.org/uscode36.html