I'd like to know where I can find the Eagle lib for the Arduino Mega2560 Pro Mini. Can be the shield for it.
Do you mean the Arduino Mega2560? Or the Arduino Pro Mini?
There is also a third party board that has sometimes been referred to as an "mega2560 pro mini" or "meduino" - providing a physically smaller, more breadboard friendly board with the bigger processor (comparing it to a pro mini is not correct, as the pro mini does not have a builtin serial adapter - unfortunately these do). As far as I know the manufacturer has no affiliation with Arduino, and you should contact them to inquire if the design files are available.
Yes, it's also called Meduino. I'll try with the manufacturer. Thanks a lot.