How to lighten an off-white backgound
I have recently photographed several old Ordnance Survey maps (the oldest being 1879) and want to include them in a book I am preparing. The maps are all line-drawn in black but, with the passage of years, the backgrounds are now rather off-white and yellowy. In Photoshop Elements, what is the simplest way of making the background lighter without losing the blackness of the line-drawn maps themselves.


