African Map

Hi All!

I'm a high school student that is doing a project for Government class and I need to find a rectangular map of all of Africa that has the Latitude and Longitude lines included. The lines CAN NOT be curved! They must be going straight up and straight down. I would appreciate if you know of any place where I can find such a map, please email me at...rubbieducker387@yahoo.com
Thanks soo much!!!!