July 1-3- The Battle of Gettysburg, Pennsylvania. The bloodiest battle of the Civil War dashes Robert E. Lee's hopes for a successful invasion of the North. July 4- Vicksburg, Mississippi, surrenders to the Union Army under Grant.
Method. 1  Test the pen to make sure it can tell the difference between good money and computer paper. 2  Apply spray starch to the next dollar bill in an attempt to make it read as fake. 3  After drying, test the results by re-applying the counterfeit money detector pen to both the dollar and to the computer paper.
Test the pen to make sure it can tell the difference between good money and computer paper. This initial check also serves to prove that the pen is working as advertised. I applied the pen to one of the dollar bills and to a sheet of computer paper (folded in half).