A grid can be used to help align the curled image in ArcMap.

• Don't worry if the grid is larger than your curled image.  
• While handy, using a grid is not absolutely necessary.  You can “eyeball” the transformation instead.

1. Right click on the grid image at the bottom of this page and select "Save image as..." or "Save Picture As..." and save the file to your computer.  
   
   
   
    
2. From a file browser, drag the grid file into the ArcMap table of contents and place it above the image you want to uncurl.   
    
3. A window will pop up asking if you want to build pyramids. Respond “Yes”.
   
   
    
4. If a window pops up saying that the data source has an unknown or missing spatial reference, click “OK”.
   
    
5. Double click on the grid image name.  
   
   
    
6. Go to the "Display" tab in "Layer Properties" and set the transparency anywhere from 50% to 90%, depending on your preference, and press "OK".
   
   
    
7. When zoomed out, some of the grid lines may disappear; don't worry they will show up when you zoom in to look at the text.
    

Below is a grid image you may use: